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Finding the Fourth Proportional to 393,341.05, 542,614.13 and 248,326.54

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Solution

The fourth proportional to 393,341.05, 542,614.13 and 248,326.54 is: 342,566.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,341.05 : 542,614.13 = 248,326.54 : x
  2. Step 2: Convert to fraction form
    393,341.05/542,614.13 = 248,326.54/x
  3. Step 3: Cross multiply
    393,341.05x = 542,614.13 × 248,326.54
  4. Step 4: Simplify right side
    393,341.05x = 134,745,488,216.38
  5. Step 5: Solve for x
    x = 134,745,488,216.38/393,341.05
  6. Step 6: Final answer
    x = 342,566.56

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1.5x scale

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.