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Finding the Fourth Proportional to 485,105.76, 726,315.12 and 247,937.76

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Solution

The fourth proportional to 485,105.76, 726,315.12 and 247,937.76 is: 371,219.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,105.76 : 726,315.12 = 247,937.76 : x
  2. Step 2: Convert to fraction form
    485,105.76/726,315.12 = 247,937.76/x
  3. Step 3: Cross multiply
    485,105.76x = 726,315.12 × 247,937.76
  4. Step 4: Simplify right side
    485,105.76x = 180,080,943,906.93
  5. Step 5: Solve for x
    x = 180,080,943,906.93/485,105.76
  6. Step 6: Final answer
    x = 371,219.97

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1.5x scale

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.