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Finding the Fourth Proportional to 347,915.10, 522,045.45 and 137,559.90

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Solution

The fourth proportional to 347,915.10, 522,045.45 and 137,559.90 is: 206,408.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,915.10 : 522,045.45 = 137,559.90 : x
  2. Step 2: Convert to fraction form
    347,915.10/522,045.45 = 137,559.90/x
  3. Step 3: Cross multiply
    347,915.10x = 522,045.45 × 137,559.90
  4. Step 4: Simplify right side
    347,915.10x = 71,812,519,897.46
  5. Step 5: Solve for x
    x = 71,812,519,897.46/347,915.10
  6. Step 6: Final answer
    x = 206,408.17

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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.