Home / 279,936,381.60-419,904,572.40-207,376,970.40

Finding the Fourth Proportional to 279,936,381.60, 419,904,572.40 and 207,376,970.40

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Solution

The fourth proportional to 279,936,381.60, 419,904,572.40 and 207,376,970.40 is: 311,065,455.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,381.60 : 419,904,572.40 = 207,376,970.40 : x
  2. Step 2: Convert to fraction form
    279,936,381.60/419,904,572.40 = 207,376,970.40/x
  3. Step 3: Cross multiply
    279,936,381.60x = 419,904,572.40 × 207,376,970.40
  4. Step 4: Simplify right side
    279,936,381.60x = 87,078,538,081,419,456
  5. Step 5: Solve for x
    x = 87,078,538,081,419,456/279,936,381.60
  6. Step 6: Final answer
    x = 311,065,455.60

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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.