Home / 279,936,905.10-419,905,357.65-156,989,013.90

Finding the Fourth Proportional to 279,936,905.10, 419,905,357.65 and 156,989,013.90

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Solution

The fourth proportional to 279,936,905.10, 419,905,357.65 and 156,989,013.90 is: 235,483,520.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,936,905.10 : 419,905,357.65 = 156,989,013.90 : x
  2. Step 2: Convert to fraction form
    279,936,905.10/419,905,357.65 = 156,989,013.90/x
  3. Step 3: Cross multiply
    279,936,905.10x = 419,905,357.65 × 156,989,013.90
  4. Step 4: Simplify right side
    279,936,905.10x = 65,920,528,028,800,320
  5. Step 5: Solve for x
    x = 65,920,528,028,800,320/279,936,905.10
  6. Step 6: Final answer
    x = 235,483,520.85

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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.