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Finding the Fourth Proportional to 356,540.80, 491,946.48 and 203,530.24

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Solution

The fourth proportional to 356,540.80, 491,946.48 and 203,530.24 is: 280,826.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,540.80 : 491,946.48 = 203,530.24 : x
  2. Step 2: Convert to fraction form
    356,540.80/491,946.48 = 203,530.24/x
  3. Step 3: Cross multiply
    356,540.80x = 491,946.48 × 203,530.24
  4. Step 4: Simplify right side
    356,540.80x = 100,125,985,141.56
  5. Step 5: Solve for x
    x = 100,125,985,141.56/356,540.80
  6. Step 6: Final answer
    x = 280,826.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.