Home / 260,820,515.40-391,230,773.10-139,888,163.40

Finding the Fourth Proportional to 260,820,515.40, 391,230,773.10 and 139,888,163.40

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Solution

The fourth proportional to 260,820,515.40, 391,230,773.10 and 139,888,163.40 is: 209,832,245.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,820,515.40 : 391,230,773.10 = 139,888,163.40 : x
  2. Step 2: Convert to fraction form
    260,820,515.40/391,230,773.10 = 139,888,163.40/x
  3. Step 3: Cross multiply
    260,820,515.40x = 391,230,773.10 × 139,888,163.40
  4. Step 4: Simplify right side
    260,820,515.40x = 54,728,554,314,521,128
  5. Step 5: Solve for x
    x = 54,728,554,314,521,128/260,820,515.40
  6. Step 6: Final answer
    x = 209,832,245.10

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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.