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Finding the Fourth Proportional to 220,571.13, 330,856.70 and 54,359.13

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Solution

The fourth proportional to 220,571.13, 330,856.70 and 54,359.13 is: 81,538.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,571.13 : 330,856.70 = 54,359.13 : x
  2. Step 2: Convert to fraction form
    220,571.13/330,856.70 = 54,359.13/x
  3. Step 3: Cross multiply
    220,571.13x = 330,856.70 × 54,359.13
  4. Step 4: Simplify right side
    220,571.13x = 17,985,082,366.67
  5. Step 5: Solve for x
    x = 17,985,082,366.67/220,571.13
  6. Step 6: Final answer
    x = 81,538.70

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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.