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Finding the Fourth Proportional to 485,474.53, 728,210.73 and 130,488.54

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Solution

The fourth proportional to 485,474.53, 728,210.73 and 130,488.54 is: 195,732.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,474.53 : 728,210.73 = 130,488.54 : x
  2. Step 2: Convert to fraction form
    485,474.53/728,210.73 = 130,488.54/x
  3. Step 3: Cross multiply
    485,474.53x = 728,210.73 × 130,488.54
  4. Step 4: Simplify right side
    485,474.53x = 95,023,154,970.03
  5. Step 5: Solve for x
    x = 95,023,154,970.03/485,474.53
  6. Step 6: Final answer
    x = 195,732.52

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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.