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Finding the Fourth Proportional to 273,909.60, 410,936.40 and 86,920.80

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Solution

The fourth proportional to 273,909.60, 410,936.40 and 86,920.80 is: 130,404.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,909.60 : 410,936.40 = 86,920.80 : x
  2. Step 2: Convert to fraction form
    273,909.60/410,936.40 = 86,920.80/x
  3. Step 3: Cross multiply
    273,909.60x = 410,936.40 × 86,920.80
  4. Step 4: Simplify right side
    273,909.60x = 35,718,920,637.12
  5. Step 5: Solve for x
    x = 35,718,920,637.12/273,909.60
  6. Step 6: Final answer
    x = 130,404.05

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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.