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Finding the Fourth Proportional to 472,230.20, 708,518.10 and 191,775.80

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Solution

The fourth proportional to 472,230.20, 708,518.10 and 191,775.80 is: 287,733.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,230.20 : 708,518.10 = 191,775.80 : x
  2. Step 2: Convert to fraction form
    472,230.20/708,518.10 = 191,775.80/x
  3. Step 3: Cross multiply
    472,230.20x = 708,518.10 × 191,775.80
  4. Step 4: Simplify right side
    472,230.20x = 135,876,625,441.98
  5. Step 5: Solve for x
    x = 135,876,625,441.98/472,230.20
  6. Step 6: Final answer
    x = 287,733.88

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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.