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Finding the Fourth Proportional to 206,885.40, 310,328.10 and 88,568.70

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Solution

The fourth proportional to 206,885.40, 310,328.10 and 88,568.70 is: 132,853.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,885.40 : 310,328.10 = 88,568.70 : x
  2. Step 2: Convert to fraction form
    206,885.40/310,328.10 = 88,568.70/x
  3. Step 3: Cross multiply
    206,885.40x = 310,328.10 × 88,568.70
  4. Step 4: Simplify right side
    206,885.40x = 27,485,356,390.47
  5. Step 5: Solve for x
    x = 27,485,356,390.47/206,885.40
  6. Step 6: Final answer
    x = 132,853.05

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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.