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Finding the Fourth Proportional to 518,588.50, 777,882.75 and 168,380.50

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Solution

The fourth proportional to 518,588.50, 777,882.75 and 168,380.50 is: 252,570.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,588.50 : 777,882.75 = 168,380.50 : x
  2. Step 2: Convert to fraction form
    518,588.50/777,882.75 = 168,380.50/x
  3. Step 3: Cross multiply
    518,588.50x = 777,882.75 × 168,380.50
  4. Step 4: Simplify right side
    518,588.50x = 130,980,286,386.38
  5. Step 5: Solve for x
    x = 130,980,286,386.38/518,588.50
  6. Step 6: Final answer
    x = 252,570.75

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.