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Finding the Fourth Proportional to 658,635.75, 987,956.06 and 159,999.75

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Solution

The fourth proportional to 658,635.75, 987,956.06 and 159,999.75 is: 240,000.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,635.75 : 987,956.06 = 159,999.75 : x
  2. Step 2: Convert to fraction form
    658,635.75/987,956.06 = 159,999.75/x
  3. Step 3: Cross multiply
    658,635.75x = 987,956.06 × 159,999.75
  4. Step 4: Simplify right side
    658,635.75x = 158,072,721,810.99
  5. Step 5: Solve for x
    x = 158,072,721,810.99/658,635.75
  6. Step 6: Final answer
    x = 240,000.22

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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.