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Finding the Fourth Proportional to 247,209.20, 370,813.80 and 60,220.70

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Solution

The fourth proportional to 247,209.20, 370,813.80 and 60,220.70 is: 90,331.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,209.20 : 370,813.80 = 60,220.70 : x
  2. Step 2: Convert to fraction form
    247,209.20/370,813.80 = 60,220.70/x
  3. Step 3: Cross multiply
    247,209.20x = 370,813.80 × 60,220.70
  4. Step 4: Simplify right side
    247,209.20x = 22,330,666,605.66
  5. Step 5: Solve for x
    x = 22,330,666,605.66/247,209.20
  6. Step 6: Final answer
    x = 90,331.05

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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.