Home / 285,538.46-428,308.65-72,306.27

Finding the Fourth Proportional to 285,538.46, 428,308.65 and 72,306.27

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Solution

The fourth proportional to 285,538.46, 428,308.65 and 72,306.27 is: 108,459.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,538.46 : 428,308.65 = 72,306.27 : x
  2. Step 2: Convert to fraction form
    285,538.46/428,308.65 = 72,306.27/x
  3. Step 3: Cross multiply
    285,538.46x = 428,308.65 × 72,306.27
  4. Step 4: Simplify right side
    285,538.46x = 30,969,400,890.24
  5. Step 5: Solve for x
    x = 30,969,400,890.24/285,538.46
  6. Step 6: Final answer
    x = 108,459.65

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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.