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Finding the Fourth Proportional to 239,230.86, 358,916.45 and 70,755.61

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Solution

The fourth proportional to 239,230.86, 358,916.45 and 70,755.61 is: 106,154.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,230.86 : 358,916.45 = 70,755.61 : x
  2. Step 2: Convert to fraction form
    239,230.86/358,916.45 = 70,755.61/x
  3. Step 3: Cross multiply
    239,230.86x = 358,916.45 × 70,755.61
  4. Step 4: Simplify right side
    239,230.86x = 25,395,352,358.78
  5. Step 5: Solve for x
    x = 25,395,352,358.78/239,230.86
  6. Step 6: Final answer
    x = 106,154.17

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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.