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Finding the Fourth Proportional to 310,909.20, 465,586.20 and 248,701.20

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Solution

The fourth proportional to 310,909.20, 465,586.20 and 248,701.20 is: 372,429.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,909.20 : 465,586.20 = 248,701.20 : x
  2. Step 2: Convert to fraction form
    310,909.20/465,586.20 = 248,701.20/x
  3. Step 3: Cross multiply
    310,909.20x = 465,586.20 × 248,701.20
  4. Step 4: Simplify right side
    310,909.20x = 115,791,846,643.44
  5. Step 5: Solve for x
    x = 115,791,846,643.44/310,909.20
  6. Step 6: Final answer
    x = 372,429.79

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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.