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Finding the Fourth Proportional to 310,928.20, 465,614.70 and 248,720.20

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Solution

The fourth proportional to 310,928.20, 465,614.70 and 248,720.20 is: 372,458.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,928.20 : 465,614.70 = 248,720.20 : x
  2. Step 2: Convert to fraction form
    310,928.20/465,614.70 = 248,720.20/x
  3. Step 3: Cross multiply
    310,928.20x = 465,614.70 × 248,720.20
  4. Step 4: Simplify right side
    310,928.20x = 115,807,781,306.94
  5. Step 5: Solve for x
    x = 115,807,781,306.94/310,928.20
  6. Step 6: Final answer
    x = 372,458.28

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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.