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Finding the Fourth Proportional to 280,424.80, 420,704.16 and 93,437.92

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Solution

The fourth proportional to 280,424.80, 420,704.16 and 93,437.92 is: 140,179.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,424.80 : 420,704.16 = 93,437.92 : x
  2. Step 2: Convert to fraction form
    280,424.80/420,704.16 = 93,437.92/x
  3. Step 3: Cross multiply
    280,424.80x = 420,704.16 × 93,437.92
  4. Step 4: Simplify right side
    280,424.80x = 39,309,721,645.75
  5. Step 5: Solve for x
    x = 39,309,721,645.75/280,424.80
  6. Step 6: Final answer
    x = 140,179.19

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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.