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Finding the Fourth Proportional to 485,059.08, 727,411.22 and 185,391.48

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Solution

The fourth proportional to 485,059.08, 727,411.22 and 185,391.48 is: 278,019.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,059.08 : 727,411.22 = 185,391.48 : x
  2. Step 2: Convert to fraction form
    485,059.08/727,411.22 = 185,391.48/x
  3. Step 3: Cross multiply
    485,059.08x = 727,411.22 × 185,391.48
  4. Step 4: Simplify right side
    485,059.08x = 134,855,842,644.41
  5. Step 5: Solve for x
    x = 134,855,842,644.41/485,059.08
  6. Step 6: Final answer
    x = 278,019.42

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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.