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Finding the Fourth Proportional to 424,990.78, 637,602.57 and 125,471.25

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Solution

The fourth proportional to 424,990.78, 637,602.57 and 125,471.25 is: 188,241.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,990.78 : 637,602.57 = 125,471.25 : x
  2. Step 2: Convert to fraction form
    424,990.78/637,602.57 = 125,471.25/x
  3. Step 3: Cross multiply
    424,990.78x = 637,602.57 × 125,471.25
  4. Step 4: Simplify right side
    424,990.78x = 80,000,791,461.11
  5. Step 5: Solve for x
    x = 80,000,791,461.11/424,990.78
  6. Step 6: Final answer
    x = 188,241.24

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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.