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Finding the Fourth Proportional to 472,283.80, 708,425.70 and 192,002.20

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Solution

The fourth proportional to 472,283.80, 708,425.70 and 192,002.20 is: 288,003.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,283.80 : 708,425.70 = 192,002.20 : x
  2. Step 2: Convert to fraction form
    472,283.80/708,425.70 = 192,002.20/x
  3. Step 3: Cross multiply
    472,283.80x = 708,425.70 × 192,002.20
  4. Step 4: Simplify right side
    472,283.80x = 136,019,292,936.54
  5. Step 5: Solve for x
    x = 136,019,292,936.54/472,283.80
  6. Step 6: Final answer
    x = 288,003.30

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Similar ratio
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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.