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Finding the Fourth Proportional to 484,139.80, 726,209.70 and 247,403.80

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Solution

The fourth proportional to 484,139.80, 726,209.70 and 247,403.80 is: 371,105.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,139.80 : 726,209.70 = 247,403.80 : x
  2. Step 2: Convert to fraction form
    484,139.80/726,209.70 = 247,403.80/x
  3. Step 3: Cross multiply
    484,139.80x = 726,209.70 × 247,403.80
  4. Step 4: Simplify right side
    484,139.80x = 179,667,039,376.86
  5. Step 5: Solve for x
    x = 179,667,039,376.86/484,139.80
  6. Step 6: Final answer
    x = 371,105.70

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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.