Home / 442,731.20-664,010.40-147,243.20

Finding the Fourth Proportional to 442,731.20, 664,010.40 and 147,243.20

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Solution

The fourth proportional to 442,731.20, 664,010.40 and 147,243.20 is: 220,836.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,731.20 : 664,010.40 = 147,243.20 : x
  2. Step 2: Convert to fraction form
    442,731.20/664,010.40 = 147,243.20/x
  3. Step 3: Cross multiply
    442,731.20x = 664,010.40 × 147,243.20
  4. Step 4: Simplify right side
    442,731.20x = 97,771,016,129.28
  5. Step 5: Solve for x
    x = 97,771,016,129.28/442,731.20
  6. Step 6: Final answer
    x = 220,836.07

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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.