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Finding the Fourth Proportional to 250,390.16, 345,658.14 and 142,939.43

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Solution

The fourth proportional to 250,390.16, 345,658.14 and 142,939.43 is: 197,324.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,390.16 : 345,658.14 = 142,939.43 : x
  2. Step 2: Convert to fraction form
    250,390.16/345,658.14 = 142,939.43/x
  3. Step 3: Cross multiply
    250,390.16x = 345,658.14 × 142,939.43
  4. Step 4: Simplify right side
    250,390.16x = 49,408,175,778.17
  5. Step 5: Solve for x
    x = 49,408,175,778.17/250,390.16
  6. Step 6: Final answer
    x = 197,324.75

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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.