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Finding the Fourth Proportional to 220,598, 330,865.76 and 70,818.57

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Solution

The fourth proportional to 220,598, 330,865.76 and 70,818.57 is: 106,217.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,598 : 330,865.76 = 70,818.57 : x
  2. Step 2: Convert to fraction form
    220,598/330,865.76 = 70,818.57/x
  3. Step 3: Cross multiply
    220,598x = 330,865.76 × 70,818.57
  4. Step 4: Simplify right side
    220,598x = 23,431,437,976.74
  5. Step 5: Solve for x
    x = 23,431,437,976.74/220,598
  6. Step 6: Final answer
    x = 106,217.82

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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.