Home / 279,936,680.40-419,905,020.60-142,187,173.20

Finding the Fourth Proportional to 279,936,680.40, 419,905,020.60 and 142,187,173.20

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Solution

The fourth proportional to 279,936,680.40, 419,905,020.60 and 142,187,173.20 is: 213,280,759.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,680.40 : 419,905,020.60 = 142,187,173.20 : x
  2. Step 2: Convert to fraction form
    279,936,680.40/419,905,020.60 = 142,187,173.20/x
  3. Step 3: Cross multiply
    279,936,680.40x = 419,905,020.60 × 142,187,173.20
  4. Step 4: Simplify right side
    279,936,680.40x = 59,705,107,891,601,768
  5. Step 5: Solve for x
    x = 59,705,107,891,601,768/279,936,680.40
  6. Step 6: Final answer
    x = 213,280,759.80

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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.