Home / 438,981.48-658,472.49-123,438.39

Finding the Fourth Proportional to 438,981.48, 658,472.49 and 123,438.39

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Solution

The fourth proportional to 438,981.48, 658,472.49 and 123,438.39 is: 185,157.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,981.48 : 658,472.49 = 123,438.39 : x
  2. Step 2: Convert to fraction form
    438,981.48/658,472.49 = 123,438.39/x
  3. Step 3: Cross multiply
    438,981.48x = 658,472.49 × 123,438.39
  4. Step 4: Simplify right side
    438,981.48x = 81,280,784,024.89
  5. Step 5: Solve for x
    x = 81,280,784,024.89/438,981.48
  6. Step 6: Final answer
    x = 185,157.66

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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.