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Finding the Fourth Proportional to 518,196.28, 777,294.42 and 202,431.76

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Solution

The fourth proportional to 518,196.28, 777,294.42 and 202,431.76 is: 303,647.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,196.28 : 777,294.42 = 202,431.76 : x
  2. Step 2: Convert to fraction form
    518,196.28/777,294.42 = 202,431.76/x
  3. Step 3: Cross multiply
    518,196.28x = 777,294.42 × 202,431.76
  4. Step 4: Simplify right side
    518,196.28x = 157,349,077,478.78
  5. Step 5: Solve for x
    x = 157,349,077,478.78/518,196.28
  6. Step 6: Final answer
    x = 303,647.64

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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.