Home / 279,936,396.60-419,904,594.90-207,376,985.40

Finding the Fourth Proportional to 279,936,396.60, 419,904,594.90 and 207,376,985.40

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Solution

The fourth proportional to 279,936,396.60, 419,904,594.90 and 207,376,985.40 is: 311,065,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,396.60 : 419,904,594.90 = 207,376,985.40 : x
  2. Step 2: Convert to fraction form
    279,936,396.60/419,904,594.90 = 207,376,985.40/x
  3. Step 3: Cross multiply
    279,936,396.60x = 419,904,594.90 × 207,376,985.40
  4. Step 4: Simplify right side
    279,936,396.60x = 87,078,549,045,970,208
  5. Step 5: Solve for x
    x = 87,078,549,045,970,208/279,936,396.60
  6. Step 6: Final answer
    x = 311,065,478.10

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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.