Home / 206,575.12-309,838.92-64,431.28

Finding the Fourth Proportional to 206,575.12, 309,838.92 and 64,431.28

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Solution

The fourth proportional to 206,575.12, 309,838.92 and 64,431.28 is: 96,639.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,575.12 : 309,838.92 = 64,431.28 : x
  2. Step 2: Convert to fraction form
    206,575.12/309,838.92 = 64,431.28/x
  3. Step 3: Cross multiply
    206,575.12x = 309,838.92 × 64,431.28
  4. Step 4: Simplify right side
    206,575.12x = 19,963,318,209.42
  5. Step 5: Solve for x
    x = 19,963,318,209.42/206,575.12
  6. Step 6: Final answer
    x = 96,639.51

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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.