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Finding the Fourth Proportional to 206,868.46, 310,296.52 and 57,117.90

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Solution

The fourth proportional to 206,868.46, 310,296.52 and 57,117.90 is: 85,675.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,868.46 : 310,296.52 = 57,117.90 : x
  2. Step 2: Convert to fraction form
    206,868.46/310,296.52 = 57,117.90/x
  3. Step 3: Cross multiply
    206,868.46x = 310,296.52 × 57,117.90
  4. Step 4: Simplify right side
    206,868.46x = 17,723,485,599.71
  5. Step 5: Solve for x
    x = 17,723,485,599.71/206,868.46
  6. Step 6: Final answer
    x = 85,675.15

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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.