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Finding the Fourth Proportional to 253,516.95, 379,728.72 and 238,611.69

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Solution

The fourth proportional to 253,516.95, 379,728.72 and 238,611.69 is: 357,402.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,516.95 : 379,728.72 = 238,611.69 : x
  2. Step 2: Convert to fraction form
    253,516.95/379,728.72 = 238,611.69/x
  3. Step 3: Cross multiply
    253,516.95x = 379,728.72 × 238,611.69
  4. Step 4: Simplify right side
    253,516.95x = 90,607,711,620.74
  5. Step 5: Solve for x
    x = 90,607,711,620.74/253,516.95
  6. Step 6: Final answer
    x = 357,402.97

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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.