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Finding the Fourth Proportional to 250,511.31, 345,698.43 and 143,079.12

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Solution

The fourth proportional to 250,511.31, 345,698.43 and 143,079.12 is: 197,445.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,511.31 : 345,698.43 = 143,079.12 : x
  2. Step 2: Convert to fraction form
    250,511.31/345,698.43 = 143,079.12/x
  3. Step 3: Cross multiply
    250,511.31x = 345,698.43 × 143,079.12
  4. Step 4: Simplify right side
    250,511.31x = 49,462,227,149.78
  5. Step 5: Solve for x
    x = 49,462,227,149.78/250,511.31
  6. Step 6: Final answer
    x = 197,445.09

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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.