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Finding the Fourth Proportional to 472,410.80, 708,616.20 and 192,129.20

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Solution

The fourth proportional to 472,410.80, 708,616.20 and 192,129.20 is: 288,193.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,410.80 : 708,616.20 = 192,129.20 : x
  2. Step 2: Convert to fraction form
    472,410.80/708,616.20 = 192,129.20/x
  3. Step 3: Cross multiply
    472,410.80x = 708,616.20 × 192,129.20
  4. Step 4: Simplify right side
    472,410.80x = 136,145,863,613.04
  5. Step 5: Solve for x
    x = 136,145,863,613.04/472,410.80
  6. Step 6: Final answer
    x = 288,193.80

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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.