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Finding the Fourth Proportional to 216,856.44, 299,263.41 and 121,372.02

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Solution

The fourth proportional to 216,856.44, 299,263.41 and 121,372.02 is: 167,494.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,856.44 : 299,263.41 = 121,372.02 : x
  2. Step 2: Convert to fraction form
    216,856.44/299,263.41 = 121,372.02/x
  3. Step 3: Cross multiply
    216,856.44x = 299,263.41 × 121,372.02
  4. Step 4: Simplify right side
    216,856.44x = 36,322,204,583.79
  5. Step 5: Solve for x
    x = 36,322,204,583.79/216,856.44
  6. Step 6: Final answer
    x = 167,494.24

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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.