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Finding the Fourth Proportional to 347,714.80, 521,572.20 and 268,885.60

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Solution

The fourth proportional to 347,714.80, 521,572.20 and 268,885.60 is: 403,328.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,714.80 : 521,572.20 = 268,885.60 : x
  2. Step 2: Convert to fraction form
    347,714.80/521,572.20 = 268,885.60/x
  3. Step 3: Cross multiply
    347,714.80x = 521,572.20 × 268,885.60
  4. Step 4: Simplify right side
    347,714.80x = 140,243,253,940.32
  5. Step 5: Solve for x
    x = 140,243,253,940.32/347,714.80
  6. Step 6: Final answer
    x = 403,328.40

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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.