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Finding the Fourth Proportional to 220,270.82, 330,430.17 and 70,475.90

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Solution

The fourth proportional to 220,270.82, 330,430.17 and 70,475.90 is: 105,721.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,270.82 : 330,430.17 = 70,475.90 : x
  2. Step 2: Convert to fraction form
    220,270.82/330,430.17 = 70,475.90/x
  3. Step 3: Cross multiply
    220,270.82x = 330,430.17 × 70,475.90
  4. Step 4: Simplify right side
    220,270.82x = 23,287,363,617.90
  5. Step 5: Solve for x
    x = 23,287,363,617.90/220,270.82
  6. Step 6: Final answer
    x = 105,721.51

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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.