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Finding the Fourth Proportional to 356,440.40, 491,868.94 and 203,472.50

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Solution

The fourth proportional to 356,440.40, 491,868.94 and 203,472.50 is: 280,781.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,440.40 : 491,868.94 = 203,472.50 : x
  2. Step 2: Convert to fraction form
    356,440.40/491,868.94 = 203,472.50/x
  3. Step 3: Cross multiply
    356,440.40x = 491,868.94 × 203,472.50
  4. Step 4: Simplify right side
    356,440.40x = 100,081,802,894.15
  5. Step 5: Solve for x
    x = 100,081,802,894.15/356,440.40
  6. Step 6: Final answer
    x = 280,781.31

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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.