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Finding the Fourth Proportional to 393,340.55, 542,613.44 and 248,326.04

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Solution

The fourth proportional to 393,340.55, 542,613.44 and 248,326.04 is: 342,565.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,340.55 : 542,613.44 = 248,326.04 : x
  2. Step 2: Convert to fraction form
    393,340.55/542,613.44 = 248,326.04/x
  3. Step 3: Cross multiply
    393,340.55x = 542,613.44 × 248,326.04
  4. Step 4: Simplify right side
    393,340.55x = 134,745,045,564.35
  5. Step 5: Solve for x
    x = 134,745,045,564.35/393,340.55
  6. Step 6: Final answer
    x = 342,565.87

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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.