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Finding the Fourth Proportional to 447,912.80, 671,963.96 and 148,376.40

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Solution

The fourth proportional to 447,912.80, 671,963.96 and 148,376.40 is: 222,595.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,912.80 : 671,963.96 = 148,376.40 : x
  2. Step 2: Convert to fraction form
    447,912.80/671,963.96 = 148,376.40/x
  3. Step 3: Cross multiply
    447,912.80x = 671,963.96 × 148,376.40
  4. Step 4: Simplify right side
    447,912.80x = 99,703,593,314.54
  5. Step 5: Solve for x
    x = 99,703,593,314.54/447,912.80
  6. Step 6: Final answer
    x = 222,595.99

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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.