Home / 279,937,010.40-419,905,515.60-143,888,114.40

Finding the Fourth Proportional to 279,937,010.40, 419,905,515.60 and 143,888,114.40

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Solution

The fourth proportional to 279,937,010.40, 419,905,515.60 and 143,888,114.40 is: 215,832,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,937,010.40 : 419,905,515.60 = 143,888,114.40 : x
  2. Step 2: Convert to fraction form
    279,937,010.40/419,905,515.60 = 143,888,114.40/x
  3. Step 3: Cross multiply
    279,937,010.40x = 419,905,515.60 × 143,888,114.40
  4. Step 4: Simplify right side
    279,937,010.40x = 60,419,412,865,843,792
  5. Step 5: Solve for x
    x = 60,419,412,865,843,792/279,937,010.40
  6. Step 6: Final answer
    x = 215,832,171.60

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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.