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Finding the Fourth Proportional to 239,158.66, 358,689.03 and 89,371.30

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Solution

The fourth proportional to 239,158.66, 358,689.03 and 89,371.30 is: 134,038.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,158.66 : 358,689.03 = 89,371.30 : x
  2. Step 2: Convert to fraction form
    239,158.66/358,689.03 = 89,371.30/x
  3. Step 3: Cross multiply
    239,158.66x = 358,689.03 × 89,371.30
  4. Step 4: Simplify right side
    239,158.66x = 32,056,504,906.84
  5. Step 5: Solve for x
    x = 32,056,504,906.84/239,158.66
  6. Step 6: Final answer
    x = 134,038.65

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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.