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Finding the Fourth Proportional to 485,526.15, 728,288.01 and 130,540.14

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Solution

The fourth proportional to 485,526.15, 728,288.01 and 130,540.14 is: 195,809.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,526.15 : 728,288.01 = 130,540.14 : x
  2. Step 2: Convert to fraction form
    485,526.15/728,288.01 = 130,540.14/x
  3. Step 3: Cross multiply
    485,526.15x = 728,288.01 × 130,540.14
  4. Step 4: Simplify right side
    485,526.15x = 95,070,818,785.72
  5. Step 5: Solve for x
    x = 95,070,818,785.72/485,526.15
  6. Step 6: Final answer
    x = 195,809.88

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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.