Home / 511,142.43-705,381.30-281,708.10

Finding the Fourth Proportional to 511,142.43, 705,381.30 and 281,708.10

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Solution

The fourth proportional to 511,142.43, 705,381.30 and 281,708.10 is: 388,759.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,142.43 : 705,381.30 = 281,708.10 : x
  2. Step 2: Convert to fraction form
    511,142.43/705,381.30 = 281,708.10/x
  3. Step 3: Cross multiply
    511,142.43x = 705,381.30 × 281,708.10
  4. Step 4: Simplify right side
    511,142.43x = 198,711,625,798.53
  5. Step 5: Solve for x
    x = 198,711,625,798.53/511,142.43
  6. Step 6: Final answer
    x = 388,759.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.