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Finding the Fourth Proportional to 472,299.80, 708,449.70 and 259,723.40

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Solution

The fourth proportional to 472,299.80, 708,449.70 and 259,723.40 is: 389,585.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,299.80 : 708,449.70 = 259,723.40 : x
  2. Step 2: Convert to fraction form
    472,299.80/708,449.70 = 259,723.40/x
  3. Step 3: Cross multiply
    472,299.80x = 708,449.70 × 259,723.40
  4. Step 4: Simplify right side
    472,299.80x = 184,000,964,812.98
  5. Step 5: Solve for x
    x = 184,000,964,812.98/472,299.80
  6. Step 6: Final answer
    x = 389,585.10

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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.