Home / 393,275.09-542,723.42-223,510.43

Finding the Fourth Proportional to 393,275.09, 542,723.42 and 223,510.43

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Solution

The fourth proportional to 393,275.09, 542,723.42 and 223,510.43 is: 308,446.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,275.09 : 542,723.42 = 223,510.43 : x
  2. Step 2: Convert to fraction form
    393,275.09/542,723.42 = 223,510.43/x
  3. Step 3: Cross multiply
    393,275.09x = 542,723.42 × 223,510.43
  4. Step 4: Simplify right side
    393,275.09x = 121,304,344,975.27
  5. Step 5: Solve for x
    x = 121,304,344,975.27/393,275.09
  6. Step 6: Final answer
    x = 308,446.55

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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.