Home / 285,740.12-428,522.67-197,560.28

Finding the Fourth Proportional to 285,740.12, 428,522.67 and 197,560.28

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Solution

The fourth proportional to 285,740.12, 428,522.67 and 197,560.28 is: 296,279.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,740.12 : 428,522.67 = 197,560.28 : x
  2. Step 2: Convert to fraction form
    285,740.12/428,522.67 = 197,560.28/x
  3. Step 3: Cross multiply
    285,740.12x = 428,522.67 × 197,560.28
  4. Step 4: Simplify right side
    285,740.12x = 84,659,059,742.85
  5. Step 5: Solve for x
    x = 84,659,059,742.85/285,740.12
  6. Step 6: Final answer
    x = 296,279.92

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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.