Home / 289,787,443.20-434,681,164.80-261,121,996.80

Finding the Fourth Proportional to 289,787,443.20, 434,681,164.80 and 261,121,996.80

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Solution

The fourth proportional to 289,787,443.20, 434,681,164.80 and 261,121,996.80 is: 391,682,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,787,443.20 : 434,681,164.80 = 261,121,996.80 : x
  2. Step 2: Convert to fraction form
    289,787,443.20/434,681,164.80 = 261,121,996.80/x
  3. Step 3: Cross multiply
    289,787,443.20x = 434,681,164.80 × 261,121,996.80
  4. Step 4: Simplify right side
    289,787,443.20x = 113,504,813,723,925,888
  5. Step 5: Solve for x
    x = 113,504,813,723,925,888/289,787,443.20
  6. Step 6: Final answer
    x = 391,682,995.20

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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.