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Finding the Fourth Proportional to 354,419.01, 489,087.43 and 201,473.91

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Solution

The fourth proportional to 354,419.01, 489,087.43 and 201,473.91 is: 278,027.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,419.01 : 489,087.43 = 201,473.91 : x
  2. Step 2: Convert to fraction form
    354,419.01/489,087.43 = 201,473.91/x
  3. Step 3: Cross multiply
    354,419.01x = 489,087.43 × 201,473.91
  4. Step 4: Simplify right side
    354,419.01x = 98,538,356,853.95
  5. Step 5: Solve for x
    x = 98,538,356,853.95/354,419.01
  6. Step 6: Final answer
    x = 278,027.85

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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.