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Finding the Fourth Proportional to 437,535.04, 656,316.42 and 138,018.28

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Solution

The fourth proportional to 437,535.04, 656,316.42 and 138,018.28 is: 207,031.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,535.04 : 656,316.42 = 138,018.28 : x
  2. Step 2: Convert to fraction form
    437,535.04/656,316.42 = 138,018.28/x
  3. Step 3: Cross multiply
    437,535.04x = 656,316.42 × 138,018.28
  4. Step 4: Simplify right side
    437,535.04x = 90,583,663,424.16
  5. Step 5: Solve for x
    x = 90,583,663,424.16/437,535.04
  6. Step 6: Final answer
    x = 207,031.79

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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.