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Finding the Fourth Proportional to 202,489.71, 279,438.74 and 117,606.76

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Solution

The fourth proportional to 202,489.71, 279,438.74 and 117,606.76 is: 162,299.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,489.71 : 279,438.74 = 117,606.76 : x
  2. Step 2: Convert to fraction form
    202,489.71/279,438.74 = 117,606.76/x
  3. Step 3: Cross multiply
    202,489.71x = 279,438.74 × 117,606.76
  4. Step 4: Simplify right side
    202,489.71x = 32,863,884,829.88
  5. Step 5: Solve for x
    x = 32,863,884,829.88/202,489.71
  6. Step 6: Final answer
    x = 162,299.04

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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.