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Finding the Fourth Proportional to 318,863.50, 440,062.68 and 238,150.88

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Solution

The fourth proportional to 318,863.50, 440,062.68 and 238,150.88 is: 328,671.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,863.50 : 440,062.68 = 238,150.88 : x
  2. Step 2: Convert to fraction form
    318,863.50/440,062.68 = 238,150.88/x
  3. Step 3: Cross multiply
    318,863.50x = 440,062.68 × 238,150.88
  4. Step 4: Simplify right side
    318,863.50x = 104,801,314,497.16
  5. Step 5: Solve for x
    x = 104,801,314,497.16/318,863.50
  6. Step 6: Final answer
    x = 328,671.40

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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.