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Finding the Fourth Proportional to 220,089.72, 330,156.44 and 79,859.28

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Solution

The fourth proportional to 220,089.72, 330,156.44 and 79,859.28 is: 119,796.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,089.72 : 330,156.44 = 79,859.28 : x
  2. Step 2: Convert to fraction form
    220,089.72/330,156.44 = 79,859.28/x
  3. Step 3: Cross multiply
    220,089.72x = 330,156.44 × 79,859.28
  4. Step 4: Simplify right side
    220,089.72x = 26,366,055,585.76
  5. Step 5: Solve for x
    x = 26,366,055,585.76/220,089.72
  6. Step 6: Final answer
    x = 119,796.85

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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.