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Finding the Fourth Proportional to 485,460.54, 727,720.61 and 185,710.32

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Solution

The fourth proportional to 485,460.54, 727,720.61 and 185,710.32 is: 278,385.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,460.54 : 727,720.61 = 185,710.32 : x
  2. Step 2: Convert to fraction form
    485,460.54/727,720.61 = 185,710.32/x
  3. Step 3: Cross multiply
    485,460.54x = 727,720.61 × 185,710.32
  4. Step 4: Simplify right side
    485,460.54x = 135,145,226,425.14
  5. Step 5: Solve for x
    x = 135,145,226,425.14/485,460.54
  6. Step 6: Final answer
    x = 278,385.61

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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.