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Finding the Fourth Proportional to 386,352.03, 579,491.09 and 236,515.20

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Solution

The fourth proportional to 386,352.03, 579,491.09 and 236,515.20 is: 354,750.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,352.03 : 579,491.09 = 236,515.20 : x
  2. Step 2: Convert to fraction form
    386,352.03/579,491.09 = 236,515.20/x
  3. Step 3: Cross multiply
    386,352.03x = 579,491.09 × 236,515.20
  4. Step 4: Simplify right side
    386,352.03x = 137,058,451,049.57
  5. Step 5: Solve for x
    x = 137,058,451,049.57/386,352.03
  6. Step 6: Final answer
    x = 354,750.18

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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.