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Finding the Fourth Proportional to 508,138.67, 701,244.24 and 287,358.28

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Solution

The fourth proportional to 508,138.67, 701,244.24 and 287,358.28 is: 396,561.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,138.67 : 701,244.24 = 287,358.28 : x
  2. Step 2: Convert to fraction form
    508,138.67/701,244.24 = 287,358.28/x
  3. Step 3: Cross multiply
    508,138.67x = 701,244.24 × 287,358.28
  4. Step 4: Simplify right side
    508,138.67x = 201,508,339,780.10
  5. Step 5: Solve for x
    x = 201,508,339,780.10/508,138.67
  6. Step 6: Final answer
    x = 396,561.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.