Home / 278,257.20-417,337.39-128,484.82

Finding the Fourth Proportional to 278,257.20, 417,337.39 and 128,484.82

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Solution

The fourth proportional to 278,257.20, 417,337.39 and 128,484.82 is: 192,704.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,257.20 : 417,337.39 = 128,484.82 : x
  2. Step 2: Convert to fraction form
    278,257.20/417,337.39 = 128,484.82/x
  3. Step 3: Cross multiply
    278,257.20x = 417,337.39 × 128,484.82
  4. Step 4: Simplify right side
    278,257.20x = 53,621,519,433.42
  5. Step 5: Solve for x
    x = 53,621,519,433.42/278,257.20
  6. Step 6: Final answer
    x = 192,704.88

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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.