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Finding the Fourth Proportional to 206,807.70, 310,265.55 and 66,569.70

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Solution

The fourth proportional to 206,807.70, 310,265.55 and 66,569.70 is: 99,871.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,807.70 : 310,265.55 = 66,569.70 : x
  2. Step 2: Convert to fraction form
    206,807.70/310,265.55 = 66,569.70/x
  3. Step 3: Cross multiply
    206,807.70x = 310,265.55 × 66,569.70
  4. Step 4: Simplify right side
    206,807.70x = 20,654,284,583.84
  5. Step 5: Solve for x
    x = 20,654,284,583.84/206,807.70
  6. Step 6: Final answer
    x = 99,871.93

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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.