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Finding the Fourth Proportional to 220,499.80, 330,749.70 and 160,721.80

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Solution

The fourth proportional to 220,499.80, 330,749.70 and 160,721.80 is: 241,082.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,499.80 : 330,749.70 = 160,721.80 : x
  2. Step 2: Convert to fraction form
    220,499.80/330,749.70 = 160,721.80/x
  3. Step 3: Cross multiply
    220,499.80x = 330,749.70 × 160,721.80
  4. Step 4: Simplify right side
    220,499.80x = 53,158,687,133.46
  5. Step 5: Solve for x
    x = 53,158,687,133.46/220,499.80
  6. Step 6: Final answer
    x = 241,082.70

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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.