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Finding the Fourth Proportional to 321,587.52, 443,786.40 and 178,350.24

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Solution

The fourth proportional to 321,587.52, 443,786.40 and 178,350.24 is: 246,120.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,587.52 : 443,786.40 = 178,350.24 : x
  2. Step 2: Convert to fraction form
    321,587.52/443,786.40 = 178,350.24/x
  3. Step 3: Cross multiply
    321,587.52x = 443,786.40 × 178,350.24
  4. Step 4: Simplify right side
    321,587.52x = 79,149,410,948.74
  5. Step 5: Solve for x
    x = 79,149,410,948.74/321,587.52
  6. Step 6: Final answer
    x = 246,120.90

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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.