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Finding the Fourth Proportional to 207,446.80, 310,651.80 and 136,944.40

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Solution

The fourth proportional to 207,446.80, 310,651.80 and 136,944.40 is: 205,074.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,446.80 : 310,651.80 = 136,944.40 : x
  2. Step 2: Convert to fraction form
    207,446.80/310,651.80 = 136,944.40/x
  3. Step 3: Cross multiply
    207,446.80x = 310,651.80 × 136,944.40
  4. Step 4: Simplify right side
    207,446.80x = 42,542,024,359.92
  5. Step 5: Solve for x
    x = 42,542,024,359.92/207,446.80
  6. Step 6: Final answer
    x = 205,074.38

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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.