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Finding the Fourth Proportional to 257,527.20, 386,290.80 and 163,048.80

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Solution

The fourth proportional to 257,527.20, 386,290.80 and 163,048.80 is: 244,573.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,527.20 : 386,290.80 = 163,048.80 : x
  2. Step 2: Convert to fraction form
    257,527.20/386,290.80 = 163,048.80/x
  3. Step 3: Cross multiply
    257,527.20x = 386,290.80 × 163,048.80
  4. Step 4: Simplify right side
    257,527.20x = 62,984,251,391.04
  5. Step 5: Solve for x
    x = 62,984,251,391.04/257,527.20
  6. Step 6: Final answer
    x = 244,573.20

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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.