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Finding the Fourth Proportional to 216,984.96, 299,425.92 and 121,475.52

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Solution

The fourth proportional to 216,984.96, 299,425.92 and 121,475.52 is: 167,628.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,984.96 : 299,425.92 = 121,475.52 : x
  2. Step 2: Convert to fraction form
    216,984.96/299,425.92 = 121,475.52/x
  3. Step 3: Cross multiply
    216,984.96x = 299,425.92 × 121,475.52
  4. Step 4: Simplify right side
    216,984.96x = 36,372,919,333.48
  5. Step 5: Solve for x
    x = 36,372,919,333.48/216,984.96
  6. Step 6: Final answer
    x = 167,628.76

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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.