Home / 208,538.27-312,851.15-90,226.43

Finding the Fourth Proportional to 208,538.27, 312,851.15 and 90,226.43

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Solution

The fourth proportional to 208,538.27, 312,851.15 and 90,226.43 is: 135,358.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,538.27 : 312,851.15 = 90,226.43 : x
  2. Step 2: Convert to fraction form
    208,538.27/312,851.15 = 90,226.43/x
  3. Step 3: Cross multiply
    208,538.27x = 312,851.15 × 90,226.43
  4. Step 4: Simplify right side
    208,538.27x = 28,227,441,934.76
  5. Step 5: Solve for x
    x = 28,227,441,934.76/208,538.27
  6. Step 6: Final answer
    x = 135,358.57

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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.