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Finding the Fourth Proportional to 356,440.72, 491,869.36 and 203,472.84

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Solution

The fourth proportional to 356,440.72, 491,869.36 and 203,472.84 is: 280,781.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,440.72 : 491,869.36 = 203,472.84 : x
  2. Step 2: Convert to fraction form
    356,440.72/491,869.36 = 203,472.84/x
  3. Step 3: Cross multiply
    356,440.72x = 491,869.36 × 203,472.84
  4. Step 4: Simplify right side
    356,440.72x = 100,082,055,588.18
  5. Step 5: Solve for x
    x = 100,082,055,588.18/356,440.72
  6. Step 6: Final answer
    x = 280,781.77

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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.