Home / 268,205.60-402,308.40-81,217.10

Finding the Fourth Proportional to 268,205.60, 402,308.40 and 81,217.10

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Solution

The fourth proportional to 268,205.60, 402,308.40 and 81,217.10 is: 121,825.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,205.60 : 402,308.40 = 81,217.10 : x
  2. Step 2: Convert to fraction form
    268,205.60/402,308.40 = 81,217.10/x
  3. Step 3: Cross multiply
    268,205.60x = 402,308.40 × 81,217.10
  4. Step 4: Simplify right side
    268,205.60x = 32,674,321,553.64
  5. Step 5: Solve for x
    x = 32,674,321,553.64/268,205.60
  6. Step 6: Final answer
    x = 121,825.65

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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.