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Finding the Fourth Proportional to 220,657.35, 330,989.27 and 54,445.35

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Solution

The fourth proportional to 220,657.35, 330,989.27 and 54,445.35 is: 81,668.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,657.35 : 330,989.27 = 54,445.35 : x
  2. Step 2: Convert to fraction form
    220,657.35/330,989.27 = 54,445.35/x
  3. Step 3: Cross multiply
    220,657.35x = 330,989.27 × 54,445.35
  4. Step 4: Simplify right side
    220,657.35x = 18,020,826,379.17
  5. Step 5: Solve for x
    x = 18,020,826,379.17/220,657.35
  6. Step 6: Final answer
    x = 81,668.82

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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.