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Finding the Fourth Proportional to 220,260.20, 330,385.05 and 70,499.90

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Solution

The fourth proportional to 220,260.20, 330,385.05 and 70,499.90 is: 105,748.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,260.20 : 330,385.05 = 70,499.90 : x
  2. Step 2: Convert to fraction form
    220,260.20/330,385.05 = 70,499.90/x
  3. Step 3: Cross multiply
    220,260.20x = 330,385.05 × 70,499.90
  4. Step 4: Simplify right side
    220,260.20x = 23,292,111,334.57
  5. Step 5: Solve for x
    x = 23,292,111,334.57/220,260.20
  6. Step 6: Final answer
    x = 105,748.16

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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.