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Finding the Fourth Proportional to 280,244.91, 420,437.77 and 80,565.66

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Solution

The fourth proportional to 280,244.91, 420,437.77 and 80,565.66 is: 120,868.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,244.91 : 420,437.77 = 80,565.66 : x
  2. Step 2: Convert to fraction form
    280,244.91/420,437.77 = 80,565.66/x
  3. Step 3: Cross multiply
    280,244.91x = 420,437.77 × 80,565.66
  4. Step 4: Simplify right side
    280,244.91x = 33,872,846,428.98
  5. Step 5: Solve for x
    x = 33,872,846,428.98/280,244.91
  6. Step 6: Final answer
    x = 120,868.73

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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.