Home / 260,815,937.80-391,223,906.70-139,883,585.80

Finding the Fourth Proportional to 260,815,937.80, 391,223,906.70 and 139,883,585.80

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Solution

The fourth proportional to 260,815,937.80, 391,223,906.70 and 139,883,585.80 is: 209,825,378.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,815,937.80 : 391,223,906.70 = 139,883,585.80 : x
  2. Step 2: Convert to fraction form
    260,815,937.80/391,223,906.70 = 139,883,585.80/x
  3. Step 3: Cross multiply
    260,815,937.80x = 391,223,906.70 × 139,883,585.80
  4. Step 4: Simplify right side
    260,815,937.80x = 54,725,802,919,880,648
  5. Step 5: Solve for x
    x = 54,725,802,919,880,648/260,815,937.80
  6. Step 6: Final answer
    x = 209,825,378.70

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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.