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Finding the Fourth Proportional to 228,347.47, 342,728.94 and 121,821.73

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Solution

The fourth proportional to 228,347.47, 342,728.94 and 121,821.73 is: 182,843.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,347.47 : 342,728.94 = 121,821.73 : x
  2. Step 2: Convert to fraction form
    228,347.47/342,728.94 = 121,821.73/x
  3. Step 3: Cross multiply
    228,347.47x = 342,728.94 × 121,821.73
  4. Step 4: Simplify right side
    228,347.47x = 41,751,832,391.87
  5. Step 5: Solve for x
    x = 41,751,832,391.87/228,347.47
  6. Step 6: Final answer
    x = 182,843.42

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1.5x scale

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.