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Finding the Fourth Proportional to 372,611.90, 559,000.31 and 135,953.89

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Solution

The fourth proportional to 372,611.90, 559,000.31 and 135,953.89 is: 203,960.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,611.90 : 559,000.31 = 135,953.89 : x
  2. Step 2: Convert to fraction form
    372,611.90/559,000.31 = 135,953.89/x
  3. Step 3: Cross multiply
    372,611.90x = 559,000.31 × 135,953.89
  4. Step 4: Simplify right side
    372,611.90x = 75,998,268,869.92
  5. Step 5: Solve for x
    x = 75,998,268,869.92/372,611.90
  6. Step 6: Final answer
    x = 203,960.93

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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.