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Finding the Fourth Proportional to 620,638.13, 930,955.53 and 165,229.37

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Solution

The fourth proportional to 620,638.13, 930,955.53 and 165,229.37 is: 247,843.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,638.13 : 930,955.53 = 165,229.37 : x
  2. Step 2: Convert to fraction form
    620,638.13/930,955.53 = 165,229.37/x
  3. Step 3: Cross multiply
    620,638.13x = 930,955.53 × 165,229.37
  4. Step 4: Simplify right side
    620,638.13x = 153,821,191,065.14
  5. Step 5: Solve for x
    x = 153,821,191,065.14/620,638.13
  6. Step 6: Final answer
    x = 247,843.61

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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.