Home / 280,894,085.70-421,341,128.55-76,422,160.95

Finding the Fourth Proportional to 280,894,085.70, 421,341,128.55 and 76,422,160.95

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Solution

The fourth proportional to 280,894,085.70, 421,341,128.55 and 76,422,160.95 is: 114,633,241.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,894,085.70 : 421,341,128.55 = 76,422,160.95 : x
  2. Step 2: Convert to fraction form
    280,894,085.70/421,341,128.55 = 76,422,160.95/x
  3. Step 3: Cross multiply
    280,894,085.70x = 421,341,128.55 × 76,422,160.95
  4. Step 4: Simplify right side
    280,894,085.70x = 32,199,799,540,902,744
  5. Step 5: Solve for x
    x = 32,199,799,540,902,744/280,894,085.70
  6. Step 6: Final answer
    x = 114,633,241.43

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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.