Home / 260,333.22-390,500.81-91,761.53

Finding the Fourth Proportional to 260,333.22, 390,500.81 and 91,761.53

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Solution

The fourth proportional to 260,333.22, 390,500.81 and 91,761.53 is: 137,642.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,333.22 : 390,500.81 = 91,761.53 : x
  2. Step 2: Convert to fraction form
    260,333.22/390,500.81 = 91,761.53/x
  3. Step 3: Cross multiply
    260,333.22x = 390,500.81 × 91,761.53
  4. Step 4: Simplify right side
    260,333.22x = 35,832,952,997.50
  5. Step 5: Solve for x
    x = 35,832,952,997.50/260,333.22
  6. Step 6: Final answer
    x = 137,642.65

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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.