Home / 279,936,733.60-419,905,100.40-143,635,895.20

Finding the Fourth Proportional to 279,936,733.60, 419,905,100.40 and 143,635,895.20

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Solution

The fourth proportional to 279,936,733.60, 419,905,100.40 and 143,635,895.20 is: 215,453,842.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,733.60 : 419,905,100.40 = 143,635,895.20 : x
  2. Step 2: Convert to fraction form
    279,936,733.60/419,905,100.40 = 143,635,895.20/x
  3. Step 3: Cross multiply
    279,936,733.60x = 419,905,100.40 × 143,635,895.20
  4. Step 4: Simplify right side
    279,936,733.60x = 60,313,444,994,999,872
  5. Step 5: Solve for x
    x = 60,313,444,994,999,872/279,936,733.60
  6. Step 6: Final answer
    x = 215,453,842.80

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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.