Home / 279,936,048.80-419,904,073.20-85,845,922.40

Finding the Fourth Proportional to 279,936,048.80, 419,904,073.20 and 85,845,922.40

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Solution

The fourth proportional to 279,936,048.80, 419,904,073.20 and 85,845,922.40 is: 128,768,883.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,048.80 : 419,904,073.20 = 85,845,922.40 : x
  2. Step 2: Convert to fraction form
    279,936,048.80/419,904,073.20 = 85,845,922.40/x
  3. Step 3: Cross multiply
    279,936,048.80x = 419,904,073.20 × 85,845,922.40
  4. Step 4: Simplify right side
    279,936,048.80x = 36,047,052,483,371,120
  5. Step 5: Solve for x
    x = 36,047,052,483,371,120/279,936,048.80
  6. Step 6: Final answer
    x = 128,768,883.60

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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.