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Finding the Fourth Proportional to 331,502.80, 497,254.20 and 238,190.80

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Solution

The fourth proportional to 331,502.80, 497,254.20 and 238,190.80 is: 357,286.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,502.80 : 497,254.20 = 238,190.80 : x
  2. Step 2: Convert to fraction form
    331,502.80/497,254.20 = 238,190.80/x
  3. Step 3: Cross multiply
    331,502.80x = 497,254.20 × 238,190.80
  4. Step 4: Simplify right side
    331,502.80x = 118,441,375,701.36
  5. Step 5: Solve for x
    x = 118,441,375,701.36/331,502.80
  6. Step 6: Final answer
    x = 357,286.20

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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.