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Finding the Fourth Proportional to 343,690.80, 515,536.20 and 237,402.60

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Solution

The fourth proportional to 343,690.80, 515,536.20 and 237,402.60 is: 356,103.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,690.80 : 515,536.20 = 237,402.60 : x
  2. Step 2: Convert to fraction form
    343,690.80/515,536.20 = 237,402.60/x
  3. Step 3: Cross multiply
    343,690.80x = 515,536.20 × 237,402.60
  4. Step 4: Simplify right side
    343,690.80x = 122,389,634,274.12
  5. Step 5: Solve for x
    x = 122,389,634,274.12/343,690.80
  6. Step 6: Final answer
    x = 356,103.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.