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Finding the Fourth Proportional to 239,503.68, 359,060.64 and 89,660

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Solution

The fourth proportional to 239,503.68, 359,060.64 and 89,660 is: 134,417.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,503.68 : 359,060.64 = 89,660 : x
  2. Step 2: Convert to fraction form
    239,503.68/359,060.64 = 89,660/x
  3. Step 3: Cross multiply
    239,503.68x = 359,060.64 × 89,660
  4. Step 4: Simplify right side
    239,503.68x = 32,193,376,982.40
  5. Step 5: Solve for x
    x = 32,193,376,982.40/239,503.68
  6. Step 6: Final answer
    x = 134,417.05

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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.