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Finding the Fourth Proportional to 239,491.64, 359,042.64 and 89,648

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Solution

The fourth proportional to 239,491.64, 359,042.64 and 89,648 is: 134,399.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,491.64 : 359,042.64 = 89,648 : x
  2. Step 2: Convert to fraction form
    239,491.64/359,042.64 = 89,648/x
  3. Step 3: Cross multiply
    239,491.64x = 359,042.64 × 89,648
  4. Step 4: Simplify right side
    239,491.64x = 32,187,454,590.72
  5. Step 5: Solve for x
    x = 32,187,454,590.72/239,491.64
  6. Step 6: Final answer
    x = 134,399.07

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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.