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Finding the Fourth Proportional to 481,305.13, 664,376.04 and 280,101.13

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Solution

The fourth proportional to 481,305.13, 664,376.04 and 280,101.13 is: 386,641.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,305.13 : 664,376.04 = 280,101.13 : x
  2. Step 2: Convert to fraction form
    481,305.13/664,376.04 = 280,101.13/x
  3. Step 3: Cross multiply
    481,305.13x = 664,376.04 × 280,101.13
  4. Step 4: Simplify right side
    481,305.13x = 186,092,479,548.93
  5. Step 5: Solve for x
    x = 186,092,479,548.93/481,305.13
  6. Step 6: Final answer
    x = 386,641.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.