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Finding the Fourth Proportional to 206,863.20, 310,294.80 and 136,004.40

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Solution

The fourth proportional to 206,863.20, 310,294.80 and 136,004.40 is: 204,006.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,863.20 : 310,294.80 = 136,004.40 : x
  2. Step 2: Convert to fraction form
    206,863.20/310,294.80 = 136,004.40/x
  3. Step 3: Cross multiply
    206,863.20x = 310,294.80 × 136,004.40
  4. Step 4: Simplify right side
    206,863.20x = 42,201,458,097.12
  5. Step 5: Solve for x
    x = 42,201,458,097.12/206,863.20
  6. Step 6: Final answer
    x = 204,006.60

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1.5x scale

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.