Home / 279,936,221.60-419,904,332.40-210,959,991.20

Finding the Fourth Proportional to 279,936,221.60, 419,904,332.40 and 210,959,991.20

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Solution

The fourth proportional to 279,936,221.60, 419,904,332.40 and 210,959,991.20 is: 316,439,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,221.60 : 419,904,332.40 = 210,959,991.20 : x
  2. Step 2: Convert to fraction form
    279,936,221.60/419,904,332.40 = 210,959,991.20/x
  3. Step 3: Cross multiply
    279,936,221.60x = 419,904,332.40 × 210,959,991.20
  4. Step 4: Simplify right side
    279,936,221.60x = 88,583,014,267,945,872
  5. Step 5: Solve for x
    x = 88,583,014,267,945,872/279,936,221.60
  6. Step 6: Final answer
    x = 316,439,986.80

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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.