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Finding the Fourth Proportional to 399,266.20, 598,899.30 and 399,266.20

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Solution

The fourth proportional to 399,266.20, 598,899.30 and 399,266.20 is: 598,899.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,266.20 : 598,899.30 = 399,266.20 : x
  2. Step 2: Convert to fraction form
    399,266.20/598,899.30 = 399,266.20/x
  3. Step 3: Cross multiply
    399,266.20x = 598,899.30 × 399,266.20
  4. Step 4: Simplify right side
    399,266.20x = 239,120,247,693.66
  5. Step 5: Solve for x
    x = 239,120,247,693.66/399,266.20
  6. Step 6: Final answer
    x = 598,899.30

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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.