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Finding the Fourth Proportional to 321,884.88, 443,999.04 and 207,312

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Solution

The fourth proportional to 321,884.88, 443,999.04 and 207,312 is: 285,960.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,884.88 : 443,999.04 = 207,312 : x
  2. Step 2: Convert to fraction form
    321,884.88/443,999.04 = 207,312/x
  3. Step 3: Cross multiply
    321,884.88x = 443,999.04 × 207,312
  4. Step 4: Simplify right side
    321,884.88x = 92,046,328,980.48
  5. Step 5: Solve for x
    x = 92,046,328,980.48/321,884.88
  6. Step 6: Final answer
    x = 285,960.40

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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.