Home / 279,905.10-419,857.65-167,930.70

Finding the Fourth Proportional to 279,905.10, 419,857.65 and 167,930.70

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Solution

The fourth proportional to 279,905.10, 419,857.65 and 167,930.70 is: 251,896.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,905.10 : 419,857.65 = 167,930.70 : x
  2. Step 2: Convert to fraction form
    279,905.10/419,857.65 = 167,930.70/x
  3. Step 3: Cross multiply
    279,905.10x = 419,857.65 × 167,930.70
  4. Step 4: Simplify right side
    279,905.10x = 70,506,989,064.86
  5. Step 5: Solve for x
    x = 70,506,989,064.86/279,905.10
  6. Step 6: Final answer
    x = 251,896.05

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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.