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Finding the Fourth Proportional to 331,575.40, 497,363.10 and 286,474.60

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Solution

The fourth proportional to 331,575.40, 497,363.10 and 286,474.60 is: 429,711.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,575.40 : 497,363.10 = 286,474.60 : x
  2. Step 2: Convert to fraction form
    331,575.40/497,363.10 = 286,474.60/x
  3. Step 3: Cross multiply
    331,575.40x = 497,363.10 × 286,474.60
  4. Step 4: Simplify right side
    331,575.40x = 142,481,895,127.26
  5. Step 5: Solve for x
    x = 142,481,895,127.26/331,575.40
  6. Step 6: Final answer
    x = 429,711.90

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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.