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Finding the Fourth Proportional to 318,592.20, 439,466.94 and 203,896.20

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Solution

The fourth proportional to 318,592.20, 439,466.94 and 203,896.20 is: 281,254.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,592.20 : 439,466.94 = 203,896.20 : x
  2. Step 2: Convert to fraction form
    318,592.20/439,466.94 = 203,896.20/x
  3. Step 3: Cross multiply
    318,592.20x = 439,466.94 × 203,896.20
  4. Step 4: Simplify right side
    318,592.20x = 89,605,639,091.63
  5. Step 5: Solve for x
    x = 89,605,639,091.63/318,592.20
  6. Step 6: Final answer
    x = 281,254.97

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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.