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Finding the Fourth Proportional to 472,487.80, 708,278.10 and 156,782.20

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Solution

The fourth proportional to 472,487.80, 708,278.10 and 156,782.20 is: 235,022.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,487.80 : 708,278.10 = 156,782.20 : x
  2. Step 2: Convert to fraction form
    472,487.80/708,278.10 = 156,782.20/x
  3. Step 3: Cross multiply
    472,487.80x = 708,278.10 × 156,782.20
  4. Step 4: Simplify right side
    472,487.80x = 111,045,398,729.82
  5. Step 5: Solve for x
    x = 111,045,398,729.82/472,487.80
  6. Step 6: Final answer
    x = 235,022.79

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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.