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Finding the Fourth Proportional to 472,191.78, 708,496.73 and 247,498.80

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Solution

The fourth proportional to 472,191.78, 708,496.73 and 247,498.80 is: 371,357.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,191.78 : 708,496.73 = 247,498.80 : x
  2. Step 2: Convert to fraction form
    472,191.78/708,496.73 = 247,498.80/x
  3. Step 3: Cross multiply
    472,191.78x = 708,496.73 × 247,498.80
  4. Step 4: Simplify right side
    472,191.78x = 175,352,090,478.92
  5. Step 5: Solve for x
    x = 175,352,090,478.92/472,191.78
  6. Step 6: Final answer
    x = 371,357.78

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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.