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Finding the Fourth Proportional to 424,991.78, 637,604.07 and 125,472.25

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Solution

The fourth proportional to 424,991.78, 637,604.07 and 125,472.25 is: 188,242.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,991.78 : 637,604.07 = 125,472.25 : x
  2. Step 2: Convert to fraction form
    424,991.78/637,604.07 = 125,472.25/x
  3. Step 3: Cross multiply
    424,991.78x = 637,604.07 × 125,472.25
  4. Step 4: Simplify right side
    424,991.78x = 80,001,617,272.06
  5. Step 5: Solve for x
    x = 80,001,617,272.06/424,991.78
  6. Step 6: Final answer
    x = 188,242.74

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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.