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Finding the Fourth Proportional to 279,309.16, 419,029.34 and 92,320.64

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Solution

The fourth proportional to 279,309.16, 419,029.34 and 92,320.64 is: 138,502.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,309.16 : 419,029.34 = 92,320.64 : x
  2. Step 2: Convert to fraction form
    279,309.16/419,029.34 = 92,320.64/x
  3. Step 3: Cross multiply
    279,309.16x = 419,029.34 × 92,320.64
  4. Step 4: Simplify right side
    279,309.16x = 38,685,056,847.58
  5. Step 5: Solve for x
    x = 38,685,056,847.58/279,309.16
  6. Step 6: Final answer
    x = 138,502.64

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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.