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Finding the Fourth Proportional to 318,107.88, 438,813.66 and 201,608.22

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Solution

The fourth proportional to 318,107.88, 438,813.66 and 201,608.22 is: 278,108.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,107.88 : 438,813.66 = 201,608.22 : x
  2. Step 2: Convert to fraction form
    318,107.88/438,813.66 = 201,608.22/x
  3. Step 3: Cross multiply
    318,107.88x = 438,813.66 × 201,608.22
  4. Step 4: Simplify right side
    318,107.88x = 88,468,440,904.29
  5. Step 5: Solve for x
    x = 88,468,440,904.29/318,107.88
  6. Step 6: Final answer
    x = 278,108.30

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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.