Home / 485,280.06-669,689.10-281,451.75

Finding the Fourth Proportional to 485,280.06, 669,689.10 and 281,451.75

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Solution

The fourth proportional to 485,280.06, 669,689.10 and 281,451.75 is: 388,404.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,280.06 : 669,689.10 = 281,451.75 : x
  2. Step 2: Convert to fraction form
    485,280.06/669,689.10 = 281,451.75/x
  3. Step 3: Cross multiply
    485,280.06x = 669,689.10 × 281,451.75
  4. Step 4: Simplify right side
    485,280.06x = 188,485,169,150.93
  5. Step 5: Solve for x
    x = 188,485,169,150.93/485,280.06
  6. Step 6: Final answer
    x = 388,404.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.