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Finding the Fourth Proportional to 552,988.22, 763,125.52 and 311,274.60

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Solution

The fourth proportional to 552,988.22, 763,125.52 and 311,274.60 is: 429,559.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,988.22 : 763,125.52 = 311,274.60 : x
  2. Step 2: Convert to fraction form
    552,988.22/763,125.52 = 311,274.60/x
  3. Step 3: Cross multiply
    552,988.22x = 763,125.52 × 311,274.60
  4. Step 4: Simplify right side
    552,988.22x = 237,541,590,987.79
  5. Step 5: Solve for x
    x = 237,541,590,987.79/552,988.22
  6. Step 6: Final answer
    x = 429,559.95

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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.