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Finding the Fourth Proportional to 424,921.94, 637,485.87 and 125,395.88

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Solution

The fourth proportional to 424,921.94, 637,485.87 and 125,395.88 is: 188,124.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,921.94 : 637,485.87 = 125,395.88 : x
  2. Step 2: Convert to fraction form
    424,921.94/637,485.87 = 125,395.88/x
  3. Step 3: Cross multiply
    424,921.94x = 637,485.87 × 125,395.88
  4. Step 4: Simplify right side
    424,921.94x = 79,938,098,468.79
  5. Step 5: Solve for x
    x = 79,938,098,468.79/424,921.94
  6. Step 6: Final answer
    x = 188,124.20

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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.