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Finding the Fourth Proportional to 270,772.72, 406,242.12 and 121,138.96

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Solution

The fourth proportional to 270,772.72, 406,242.12 and 121,138.96 is: 181,745.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,772.72 : 406,242.12 = 121,138.96 : x
  2. Step 2: Convert to fraction form
    270,772.72/406,242.12 = 121,138.96/x
  3. Step 3: Cross multiply
    270,772.72x = 406,242.12 × 121,138.96
  4. Step 4: Simplify right side
    270,772.72x = 49,211,747,925.00
  5. Step 5: Solve for x
    x = 49,211,747,925.00/270,772.72
  6. Step 6: Final answer
    x = 181,745.59

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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.