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Finding the Fourth Proportional to 217,445.44, 300,076.80 and 121,950.10

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Solution

The fourth proportional to 217,445.44, 300,076.80 and 121,950.10 is: 168,292.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,445.44 : 300,076.80 = 121,950.10 : x
  2. Step 2: Convert to fraction form
    217,445.44/300,076.80 = 121,950.10/x
  3. Step 3: Cross multiply
    217,445.44x = 300,076.80 × 121,950.10
  4. Step 4: Simplify right side
    217,445.44x = 36,594,395,767.68
  5. Step 5: Solve for x
    x = 36,594,395,767.68/217,445.44
  6. Step 6: Final answer
    x = 168,292.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.