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Finding the Fourth Proportional to 258,950.75, 357,337.90 and 142,641.43

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Solution

The fourth proportional to 258,950.75, 357,337.90 and 142,641.43 is: 196,837.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,950.75 : 357,337.90 = 142,641.43 : x
  2. Step 2: Convert to fraction form
    258,950.75/357,337.90 = 142,641.43/x
  3. Step 3: Cross multiply
    258,950.75x = 357,337.90 × 142,641.43
  4. Step 4: Simplify right side
    258,950.75x = 50,971,189,049.20
  5. Step 5: Solve for x
    x = 50,971,189,049.20/258,950.75
  6. Step 6: Final answer
    x = 196,837.39

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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.