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Finding the Fourth Proportional to 347,909.80, 521,864.70 and 269,080.60

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Solution

The fourth proportional to 347,909.80, 521,864.70 and 269,080.60 is: 403,620.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,909.80 : 521,864.70 = 269,080.60 : x
  2. Step 2: Convert to fraction form
    347,909.80/521,864.70 = 269,080.60/x
  3. Step 3: Cross multiply
    347,909.80x = 521,864.70 × 269,080.60
  4. Step 4: Simplify right side
    347,909.80x = 140,423,666,594.82
  5. Step 5: Solve for x
    x = 140,423,666,594.82/347,909.80
  6. Step 6: Final answer
    x = 403,620.90

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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.