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Finding the Fourth Proportional to 215,070.68, 321,975.15 and 150,805.98

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Solution

The fourth proportional to 215,070.68, 321,975.15 and 150,805.98 is: 225,766.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,070.68 : 321,975.15 = 150,805.98 : x
  2. Step 2: Convert to fraction form
    215,070.68/321,975.15 = 150,805.98/x
  3. Step 3: Cross multiply
    215,070.68x = 321,975.15 × 150,805.98
  4. Step 4: Simplify right side
    215,070.68x = 48,555,778,031.40
  5. Step 5: Solve for x
    x = 48,555,778,031.40/215,070.68
  6. Step 6: Final answer
    x = 225,766.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.