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Finding the Fourth Proportional to 239,159.16, 358,689.78 and 89,371.80

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Solution

The fourth proportional to 239,159.16, 358,689.78 and 89,371.80 is: 134,039.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,159.16 : 358,689.78 = 89,371.80 : x
  2. Step 2: Convert to fraction form
    239,159.16/358,689.78 = 89,371.80/x
  3. Step 3: Cross multiply
    239,159.16x = 358,689.78 × 89,371.80
  4. Step 4: Simplify right side
    239,159.16x = 32,056,751,280.20
  5. Step 5: Solve for x
    x = 32,056,751,280.20/239,159.16
  6. Step 6: Final answer
    x = 134,039.40

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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.