Home / 260,815,921.80-391,223,882.70-139,883,569.80

Finding the Fourth Proportional to 260,815,921.80, 391,223,882.70 and 139,883,569.80

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Solution

The fourth proportional to 260,815,921.80, 391,223,882.70 and 139,883,569.80 is: 209,825,354.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,815,921.80 : 391,223,882.70 = 139,883,569.80 : x
  2. Step 2: Convert to fraction form
    260,815,921.80/391,223,882.70 = 139,883,569.80/x
  3. Step 3: Cross multiply
    260,815,921.80x = 391,223,882.70 × 139,883,569.80
  4. Step 4: Simplify right side
    260,815,921.80x = 54,725,793,303,092,464
  5. Step 5: Solve for x
    x = 54,725,793,303,092,464/260,815,921.80
  6. Step 6: Final answer
    x = 209,825,354.70

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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.