Home / 321,234.15-443,302.70-178,003.47

Finding the Fourth Proportional to 321,234.15, 443,302.70 and 178,003.47

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Solution

The fourth proportional to 321,234.15, 443,302.70 and 178,003.47 is: 245,644.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,234.15 : 443,302.70 = 178,003.47 : x
  2. Step 2: Convert to fraction form
    321,234.15/443,302.70 = 178,003.47/x
  3. Step 3: Cross multiply
    321,234.15x = 443,302.70 × 178,003.47
  4. Step 4: Simplify right side
    321,234.15x = 78,909,417,970.35
  5. Step 5: Solve for x
    x = 78,909,417,970.35/321,234.15
  6. Step 6: Final answer
    x = 245,644.55

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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.