Home / 279,936,707.90-419,905,061.85-142,187,200.70

Finding the Fourth Proportional to 279,936,707.90, 419,905,061.85 and 142,187,200.70

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Solution

The fourth proportional to 279,936,707.90, 419,905,061.85 and 142,187,200.70 is: 213,280,801.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,707.90 : 419,905,061.85 = 142,187,200.70 : x
  2. Step 2: Convert to fraction form
    279,936,707.90/419,905,061.85 = 142,187,200.70/x
  3. Step 3: Cross multiply
    279,936,707.90x = 419,905,061.85 × 142,187,200.70
  4. Step 4: Simplify right side
    279,936,707.90x = 59,705,125,304,211,864
  5. Step 5: Solve for x
    x = 59,705,125,304,211,864/279,936,707.90
  6. Step 6: Final answer
    x = 213,280,801.05

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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.