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Finding the Fourth Proportional to 424,860, 637,290 and 129,372

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Solution

The fourth proportional to 424,860, 637,290 and 129,372 is: 194,058

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,860 : 637,290 = 129,372 : x
  2. Step 2: Convert to fraction form
    424,860/637,290 = 129,372/x
  3. Step 3: Cross multiply
    424,860x = 637,290 × 129,372
  4. Step 4: Simplify right side
    424,860x = 82,447,481,880
  5. Step 5: Solve for x
    x = 82,447,481,880/424,860
  6. Step 6: Final answer
    x = 194,058

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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.