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Finding the Fourth Proportional to 347,377.20, 521,123.40 and 147,793.20

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Solution

The fourth proportional to 347,377.20, 521,123.40 and 147,793.20 is: 221,714.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,377.20 : 521,123.40 = 147,793.20 : x
  2. Step 2: Convert to fraction form
    347,377.20/521,123.40 = 147,793.20/x
  3. Step 3: Cross multiply
    347,377.20x = 521,123.40 × 147,793.20
  4. Step 4: Simplify right side
    347,377.20x = 77,018,494,880.88
  5. Step 5: Solve for x
    x = 77,018,494,880.88/347,377.20
  6. Step 6: Final answer
    x = 221,714.31

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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.