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Finding the Fourth Proportional to 250,354.84, 345,521.86 and 142,900.28

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Solution

The fourth proportional to 250,354.84, 345,521.86 and 142,900.28 is: 197,220.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,354.84 : 345,521.86 = 142,900.28 : x
  2. Step 2: Convert to fraction form
    250,354.84/345,521.86 = 142,900.28/x
  3. Step 3: Cross multiply
    250,354.84x = 345,521.86 × 142,900.28
  4. Step 4: Simplify right side
    250,354.84x = 49,375,170,540.12
  5. Step 5: Solve for x
    x = 49,375,170,540.12/250,354.84
  6. Step 6: Final answer
    x = 197,220.75

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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.