Home / 260,736,439.80-391,104,659.70-139,804,087.80

Finding the Fourth Proportional to 260,736,439.80, 391,104,659.70 and 139,804,087.80

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Solution

The fourth proportional to 260,736,439.80, 391,104,659.70 and 139,804,087.80 is: 209,706,131.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,736,439.80 : 391,104,659.70 = 139,804,087.80 : x
  2. Step 2: Convert to fraction form
    260,736,439.80/391,104,659.70 = 139,804,087.80/x
  3. Step 3: Cross multiply
    260,736,439.80x = 391,104,659.70 × 139,804,087.80
  4. Step 4: Simplify right side
    260,736,439.80x = 54,678,030,183,687,928
  5. Step 5: Solve for x
    x = 54,678,030,183,687,928/260,736,439.80
  6. Step 6: Final answer
    x = 209,706,131.70

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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.