Home / 268,277.10-402,415.65-81,288.60

Finding the Fourth Proportional to 268,277.10, 402,415.65 and 81,288.60

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Solution

The fourth proportional to 268,277.10, 402,415.65 and 81,288.60 is: 121,932.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,277.10 : 402,415.65 = 81,288.60 : x
  2. Step 2: Convert to fraction form
    268,277.10/402,415.65 = 81,288.60/x
  3. Step 3: Cross multiply
    268,277.10x = 402,415.65 × 81,288.60
  4. Step 4: Simplify right side
    268,277.10x = 32,711,804,806.59
  5. Step 5: Solve for x
    x = 32,711,804,806.59/268,277.10
  6. Step 6: Final answer
    x = 121,932.90

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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.