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Finding the Fourth Proportional to 517,115.49, 775,673.24 and 162,158.10

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Solution

The fourth proportional to 517,115.49, 775,673.24 and 162,158.10 is: 243,237.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,115.49 : 775,673.24 = 162,158.10 : x
  2. Step 2: Convert to fraction form
    517,115.49/775,673.24 = 162,158.10/x
  3. Step 3: Cross multiply
    517,115.49x = 775,673.24 × 162,158.10
  4. Step 4: Simplify right side
    517,115.49x = 125,781,698,008.45
  5. Step 5: Solve for x
    x = 125,781,698,008.45/517,115.49
  6. Step 6: Final answer
    x = 243,237.15

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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.