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Finding the Fourth Proportional to 424,045.28, 635,912.40 and 124,448.96

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Solution

The fourth proportional to 424,045.28, 635,912.40 and 124,448.96 is: 186,627.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,045.28 : 635,912.40 = 124,448.96 : x
  2. Step 2: Convert to fraction form
    424,045.28/635,912.40 = 124,448.96/x
  3. Step 3: Cross multiply
    424,045.28x = 635,912.40 × 124,448.96
  4. Step 4: Simplify right side
    424,045.28x = 79,138,636,831.10
  5. Step 5: Solve for x
    x = 79,138,636,831.10/424,045.28
  6. Step 6: Final answer
    x = 186,627.80

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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.