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Finding the Fourth Proportional to 288,170.39, 397,681.40 and 159,108.44

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Solution

The fourth proportional to 288,170.39, 397,681.40 and 159,108.44 is: 219,573.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,170.39 : 397,681.40 = 159,108.44 : x
  2. Step 2: Convert to fraction form
    288,170.39/397,681.40 = 159,108.44/x
  3. Step 3: Cross multiply
    288,170.39x = 397,681.40 × 159,108.44
  4. Step 4: Simplify right side
    288,170.39x = 63,274,465,580.38
  5. Step 5: Solve for x
    x = 63,274,465,580.38/288,170.39
  6. Step 6: Final answer
    x = 219,573.10

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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.