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Finding the Fourth Proportional to 239,329, 359,010.78 and 91,585

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Solution

The fourth proportional to 239,329, 359,010.78 and 91,585 is: 137,384.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,329 : 359,010.78 = 91,585 : x
  2. Step 2: Convert to fraction form
    239,329/359,010.78 = 91,585/x
  3. Step 3: Cross multiply
    239,329x = 359,010.78 × 91,585
  4. Step 4: Simplify right side
    239,329x = 32,880,002,286.30
  5. Step 5: Solve for x
    x = 32,880,002,286.30/239,329
  6. Step 6: Final answer
    x = 137,384.11

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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.