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Finding the Fourth Proportional to 239,521.68, 359,087.64 and 89,678

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Solution

The fourth proportional to 239,521.68, 359,087.64 and 89,678 is: 134,444.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,521.68 : 359,087.64 = 89,678 : x
  2. Step 2: Convert to fraction form
    239,521.68/359,087.64 = 89,678/x
  3. Step 3: Cross multiply
    239,521.68x = 359,087.64 × 89,678
  4. Step 4: Simplify right side
    239,521.68x = 32,202,261,379.92
  5. Step 5: Solve for x
    x = 32,202,261,379.92/239,521.68
  6. Step 6: Final answer
    x = 134,444.04

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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.