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Finding the Fourth Proportional to 321,513.48, 443,713.68 and 178,301.52

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Solution

The fourth proportional to 321,513.48, 443,713.68 and 178,301.52 is: 246,070.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,513.48 : 443,713.68 = 178,301.52 : x
  2. Step 2: Convert to fraction form
    321,513.48/443,713.68 = 178,301.52/x
  3. Step 3: Cross multiply
    321,513.48x = 443,713.68 × 178,301.52
  4. Step 4: Simplify right side
    321,513.48x = 79,114,823,588.79
  5. Step 5: Solve for x
    x = 79,114,823,588.79/321,513.48
  6. Step 6: Final answer
    x = 246,070.00

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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.