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Finding the Fourth Proportional to 321,615.08, 443,856.06 and 178,421.25

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Solution

The fourth proportional to 321,615.08, 443,856.06 and 178,421.25 is: 246,236.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,615.08 : 443,856.06 = 178,421.25 : x
  2. Step 2: Convert to fraction form
    321,615.08/443,856.06 = 178,421.25/x
  3. Step 3: Cross multiply
    321,615.08x = 443,856.06 × 178,421.25
  4. Step 4: Simplify right side
    321,615.08x = 79,193,353,045.28
  5. Step 5: Solve for x
    x = 79,193,353,045.28/321,615.08
  6. Step 6: Final answer
    x = 246,236.44

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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.