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Finding the Fourth Proportional to 381,737.78, 526,977.69 and 220,561.69

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Solution

The fourth proportional to 381,737.78, 526,977.69 and 220,561.69 is: 304,478.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,737.78 : 526,977.69 = 220,561.69 : x
  2. Step 2: Convert to fraction form
    381,737.78/526,977.69 = 220,561.69/x
  3. Step 3: Cross multiply
    381,737.78x = 526,977.69 × 220,561.69
  4. Step 4: Simplify right side
    381,737.78x = 116,231,089,898.70
  5. Step 5: Solve for x
    x = 116,231,089,898.70/381,737.78
  6. Step 6: Final answer
    x = 304,478.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.