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Finding the Fourth Proportional to 437,599.36, 656,399.15 and 138,103.38

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Solution

The fourth proportional to 437,599.36, 656,399.15 and 138,103.38 is: 207,155.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,599.36 : 656,399.15 = 138,103.38 : x
  2. Step 2: Convert to fraction form
    437,599.36/656,399.15 = 138,103.38/x
  3. Step 3: Cross multiply
    437,599.36x = 656,399.15 × 138,103.38
  4. Step 4: Simplify right side
    437,599.36x = 90,650,937,271.61
  5. Step 5: Solve for x
    x = 90,650,937,271.61/437,599.36
  6. Step 6: Final answer
    x = 207,155.10

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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.