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Finding the Fourth Proportional to 279,188.01, 417,725.21 and 165,396.90

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Solution

The fourth proportional to 279,188.01, 417,725.21 and 165,396.90 is: 247,469.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,188.01 : 417,725.21 = 165,396.90 : x
  2. Step 2: Convert to fraction form
    279,188.01/417,725.21 = 165,396.90/x
  3. Step 3: Cross multiply
    279,188.01x = 417,725.21 × 165,396.90
  4. Step 4: Simplify right side
    279,188.01x = 69,090,455,248.03
  5. Step 5: Solve for x
    x = 69,090,455,248.03/279,188.01
  6. Step 6: Final answer
    x = 247,469.28

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1.5x scale

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.