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Finding the Fourth Proportional to 216,731.22, 299,100.70 and 121,232.22

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Solution

The fourth proportional to 216,731.22, 299,100.70 and 121,232.22 is: 167,306.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,731.22 : 299,100.70 = 121,232.22 : x
  2. Step 2: Convert to fraction form
    216,731.22/299,100.70 = 121,232.22/x
  3. Step 3: Cross multiply
    216,731.22x = 299,100.70 × 121,232.22
  4. Step 4: Simplify right side
    216,731.22x = 36,260,641,864.55
  5. Step 5: Solve for x
    x = 36,260,641,864.55/216,731.22
  6. Step 6: Final answer
    x = 167,306.96

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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.