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Finding the Fourth Proportional to 359,266.20, 538,899.30 and 217,548.60

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Solution

The fourth proportional to 359,266.20, 538,899.30 and 217,548.60 is: 326,322.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,266.20 : 538,899.30 = 217,548.60 : x
  2. Step 2: Convert to fraction form
    359,266.20/538,899.30 = 217,548.60/x
  3. Step 3: Cross multiply
    359,266.20x = 538,899.30 × 217,548.60
  4. Step 4: Simplify right side
    359,266.20x = 117,236,788,255.98
  5. Step 5: Solve for x
    x = 117,236,788,255.98/359,266.20
  6. Step 6: Final answer
    x = 326,322.90

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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.