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Finding the Fourth Proportional to 331,877.60, 497,816.40 and 272,828.60

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Solution

The fourth proportional to 331,877.60, 497,816.40 and 272,828.60 is: 409,242.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,877.60 : 497,816.40 = 272,828.60 : x
  2. Step 2: Convert to fraction form
    331,877.60/497,816.40 = 272,828.60/x
  3. Step 3: Cross multiply
    331,877.60x = 497,816.40 × 272,828.60
  4. Step 4: Simplify right side
    331,877.60x = 135,818,551,469.04
  5. Step 5: Solve for x
    x = 135,818,551,469.04/331,877.60
  6. Step 6: Final answer
    x = 409,242.90

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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.