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Finding the Fourth Proportional to 273,539.20, 410,270.40 and 86,569.60

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Solution

The fourth proportional to 273,539.20, 410,270.40 and 86,569.60 is: 129,842.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,539.20 : 410,270.40 = 86,569.60 : x
  2. Step 2: Convert to fraction form
    273,539.20/410,270.40 = 86,569.60/x
  3. Step 3: Cross multiply
    273,539.20x = 410,270.40 × 86,569.60
  4. Step 4: Simplify right side
    273,539.20x = 35,516,944,419.84
  5. Step 5: Solve for x
    x = 35,516,944,419.84/273,539.20
  6. Step 6: Final answer
    x = 129,842.25

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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.