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Finding the Fourth Proportional to 211,552.50, 291,968.28 and 120,912.29

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Solution

The fourth proportional to 211,552.50, 291,968.28 and 120,912.29 is: 166,873.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,552.50 : 291,968.28 = 120,912.29 : x
  2. Step 2: Convert to fraction form
    211,552.50/291,968.28 = 120,912.29/x
  3. Step 3: Cross multiply
    211,552.50x = 291,968.28 × 120,912.29
  4. Step 4: Simplify right side
    211,552.50x = 35,302,551,277.76
  5. Step 5: Solve for x
    x = 35,302,551,277.76/211,552.50
  6. Step 6: Final answer
    x = 166,873.71

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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.