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Finding the Fourth Proportional to 552,877.55, 762,995.58 and 311,175.80

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Solution

The fourth proportional to 552,877.55, 762,995.58 and 311,175.80 is: 429,436.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,877.55 : 762,995.58 = 311,175.80 : x
  2. Step 2: Convert to fraction form
    552,877.55/762,995.58 = 311,175.80/x
  3. Step 3: Cross multiply
    552,877.55x = 762,995.58 × 311,175.80
  4. Step 4: Simplify right side
    552,877.55x = 237,425,760,002.96
  5. Step 5: Solve for x
    x = 237,425,760,002.96/552,877.55
  6. Step 6: Final answer
    x = 429,436.43

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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.