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Finding the Fourth Proportional to 216,892.44, 299,308.63 and 121,399.11

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Solution

The fourth proportional to 216,892.44, 299,308.63 and 121,399.11 is: 167,529.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,892.44 : 299,308.63 = 121,399.11 : x
  2. Step 2: Convert to fraction form
    216,892.44/299,308.63 = 121,399.11/x
  3. Step 3: Cross multiply
    216,892.44x = 299,308.63 × 121,399.11
  4. Step 4: Simplify right side
    216,892.44x = 36,335,801,297.32
  5. Step 5: Solve for x
    x = 36,335,801,297.32/216,892.44
  6. Step 6: Final answer
    x = 167,529.13

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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.