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Finding the Fourth Proportional to 220,220.68, 330,358.56 and 78,032.74

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Solution

The fourth proportional to 220,220.68, 330,358.56 and 78,032.74 is: 117,058.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,220.68 : 330,358.56 = 78,032.74 : x
  2. Step 2: Convert to fraction form
    220,220.68/330,358.56 = 78,032.74/x
  3. Step 3: Cross multiply
    220,220.68x = 330,358.56 × 78,032.74
  4. Step 4: Simplify right side
    220,220.68x = 25,778,783,619.25
  5. Step 5: Solve for x
    x = 25,778,783,619.25/220,220.68
  6. Step 6: Final answer
    x = 117,058.87

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1.5x scale

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.