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Finding the Fourth Proportional to 281,760,803.70, 393,658,909.50 and 281,760,803.70

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Solution

The fourth proportional to 281,760,803.70, 393,658,909.50 and 281,760,803.70 is: 393,658,909.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,760,803.70 : 393,658,909.50 = 281,760,803.70 : x
  2. Step 2: Convert to fraction form
    281,760,803.70/393,658,909.50 = 281,760,803.70/x
  3. Step 3: Cross multiply
    281,760,803.70x = 393,658,909.50 × 281,760,803.70
  4. Step 4: Simplify right side
    281,760,803.70x = 110,917,650,724,385,568
  5. Step 5: Solve for x
    x = 110,917,650,724,385,568/281,760,803.70
  6. Step 6: Final answer
    x = 393,658,909.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.