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Finding the Fourth Proportional to 262,440,405.80, 393,660,608.70 and 89,859,861.80

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Solution

The fourth proportional to 262,440,405.80, 393,660,608.70 and 89,859,861.80 is: 134,789,792.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,440,405.80 : 393,660,608.70 = 89,859,861.80 : x
  2. Step 2: Convert to fraction form
    262,440,405.80/393,660,608.70 = 89,859,861.80/x
  3. Step 3: Cross multiply
    262,440,405.80x = 393,660,608.70 × 89,859,861.80
  4. Step 4: Simplify right side
    262,440,405.80x = 35,374,287,893,885,876
  5. Step 5: Solve for x
    x = 35,374,287,893,885,876/262,440,405.80
  6. Step 6: Final answer
    x = 134,789,792.70

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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.