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Finding the Fourth Proportional to 386,482.53, 579,132.57 and 206,593.56

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Solution

The fourth proportional to 386,482.53, 579,132.57 and 206,593.56 is: 309,574.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,482.53 : 579,132.57 = 206,593.56 : x
  2. Step 2: Convert to fraction form
    386,482.53/579,132.57 = 206,593.56/x
  3. Step 3: Cross multiply
    386,482.53x = 579,132.57 × 206,593.56
  4. Step 4: Simplify right side
    386,482.53x = 119,645,059,348.25
  5. Step 5: Solve for x
    x = 119,645,059,348.25/386,482.53
  6. Step 6: Final answer
    x = 309,574.30

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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.