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Finding the Fourth Proportional to 220,269.82, 330,428.67 and 70,474.90

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Solution

The fourth proportional to 220,269.82, 330,428.67 and 70,474.90 is: 105,720.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,269.82 : 330,428.67 = 70,474.90 : x
  2. Step 2: Convert to fraction form
    220,269.82/330,428.67 = 70,474.90/x
  3. Step 3: Cross multiply
    220,269.82x = 330,428.67 × 70,474.90
  4. Step 4: Simplify right side
    220,269.82x = 23,286,927,475.38
  5. Step 5: Solve for x
    x = 23,286,927,475.38/220,269.82
  6. Step 6: Final answer
    x = 105,720.01

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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.