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Finding the Fourth Proportional to 297,856.40, 446,781 and 87,486.80

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Solution

The fourth proportional to 297,856.40, 446,781 and 87,486.80 is: 131,229.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,856.40 : 446,781 = 87,486.80 : x
  2. Step 2: Convert to fraction form
    297,856.40/446,781 = 87,486.80/x
  3. Step 3: Cross multiply
    297,856.40x = 446,781 × 87,486.80
  4. Step 4: Simplify right side
    297,856.40x = 39,087,439,990.80
  5. Step 5: Solve for x
    x = 39,087,439,990.80/297,856.40
  6. Step 6: Final answer
    x = 131,229.14

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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.