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Finding the Fourth Proportional to 351,479.80, 527,219.70 and 126,874.90

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Solution

The fourth proportional to 351,479.80, 527,219.70 and 126,874.90 is: 190,312.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,479.80 : 527,219.70 = 126,874.90 : x
  2. Step 2: Convert to fraction form
    351,479.80/527,219.70 = 126,874.90/x
  3. Step 3: Cross multiply
    351,479.80x = 527,219.70 × 126,874.90
  4. Step 4: Simplify right side
    351,479.80x = 66,890,946,715.53
  5. Step 5: Solve for x
    x = 66,890,946,715.53/351,479.80
  6. Step 6: Final answer
    x = 190,312.35

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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.