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Finding the Fourth Proportional to 220,270.10, 330,243.53 and 70,424.15

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Solution

The fourth proportional to 220,270.10, 330,243.53 and 70,424.15 is: 105,584.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,270.10 : 330,243.53 = 70,424.15 : x
  2. Step 2: Convert to fraction form
    220,270.10/330,243.53 = 70,424.15/x
  3. Step 3: Cross multiply
    220,270.10x = 330,243.53 × 70,424.15
  4. Step 4: Simplify right side
    220,270.10x = 23,257,120,366.74
  5. Step 5: Solve for x
    x = 23,257,120,366.74/220,270.10
  6. Step 6: Final answer
    x = 105,584.55

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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.