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Finding the Fourth Proportional to 257,513.20, 386,269.80 and 163,034.80

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Solution

The fourth proportional to 257,513.20, 386,269.80 and 163,034.80 is: 244,552.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,513.20 : 386,269.80 = 163,034.80 : x
  2. Step 2: Convert to fraction form
    257,513.20/386,269.80 = 163,034.80/x
  3. Step 3: Cross multiply
    257,513.20x = 386,269.80 × 163,034.80
  4. Step 4: Simplify right side
    257,513.20x = 62,975,419,589.04
  5. Step 5: Solve for x
    x = 62,975,419,589.04/257,513.20
  6. Step 6: Final answer
    x = 244,552.20

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1.5x scale

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.