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Finding the Fourth Proportional to 366,622.16, 550,020.72 and 129,985.52

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Solution

The fourth proportional to 366,622.16, 550,020.72 and 129,985.52 is: 195,009.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,622.16 : 550,020.72 = 129,985.52 : x
  2. Step 2: Convert to fraction form
    366,622.16/550,020.72 = 129,985.52/x
  3. Step 3: Cross multiply
    366,622.16x = 550,020.72 × 129,985.52
  4. Step 4: Simplify right side
    366,622.16x = 71,494,729,299.97
  5. Step 5: Solve for x
    x = 71,494,729,299.97/366,622.16
  6. Step 6: Final answer
    x = 195,009.30

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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.