Home / 331,769.60-497,654.40-121,428.80

Finding the Fourth Proportional to 331,769.60, 497,654.40 and 121,428.80

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Solution

The fourth proportional to 331,769.60, 497,654.40 and 121,428.80 is: 182,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,769.60 : 497,654.40 = 121,428.80 : x
  2. Step 2: Convert to fraction form
    331,769.60/497,654.40 = 121,428.80/x
  3. Step 3: Cross multiply
    331,769.60x = 497,654.40 × 121,428.80
  4. Step 4: Simplify right side
    331,769.60x = 60,429,576,606.72
  5. Step 5: Solve for x
    x = 60,429,576,606.72/331,769.60
  6. Step 6: Final answer
    x = 182,143.20

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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.