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Finding the Fourth Proportional to 310,013.20, 465,019.80 and 247,805.20

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Solution

The fourth proportional to 310,013.20, 465,019.80 and 247,805.20 is: 371,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,013.20 : 465,019.80 = 247,805.20 : x
  2. Step 2: Convert to fraction form
    310,013.20/465,019.80 = 247,805.20/x
  3. Step 3: Cross multiply
    310,013.20x = 465,019.80 × 247,805.20
  4. Step 4: Simplify right side
    310,013.20x = 115,234,324,542.96
  5. Step 5: Solve for x
    x = 115,234,324,542.96/310,013.20
  6. Step 6: Final answer
    x = 371,707.80

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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.