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Finding the Fourth Proportional to 321,567.09, 443,789.19 and 178,373.40

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Solution

The fourth proportional to 321,567.09, 443,789.19 and 178,373.40 is: 246,170.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,567.09 : 443,789.19 = 178,373.40 : x
  2. Step 2: Convert to fraction form
    321,567.09/443,789.19 = 178,373.40/x
  3. Step 3: Cross multiply
    321,567.09x = 443,789.19 × 178,373.40
  4. Step 4: Simplify right side
    321,567.09x = 79,160,186,703.55
  5. Step 5: Solve for x
    x = 79,160,186,703.55/321,567.09
  6. Step 6: Final answer
    x = 246,170.05

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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.