Home / 437,890.38-656,831.64-138,371.01

Finding the Fourth Proportional to 437,890.38, 656,831.64 and 138,371.01

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Solution

The fourth proportional to 437,890.38, 656,831.64 and 138,371.01 is: 207,555.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,890.38 : 656,831.64 = 138,371.01 : x
  2. Step 2: Convert to fraction form
    437,890.38/656,831.64 = 138,371.01/x
  3. Step 3: Cross multiply
    437,890.38x = 656,831.64 × 138,371.01
  4. Step 4: Simplify right side
    437,890.38x = 90,886,457,426.76
  5. Step 5: Solve for x
    x = 90,886,457,426.76/437,890.38
  6. Step 6: Final answer
    x = 207,555.27

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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.