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Finding the Fourth Proportional to 202,502.02, 279,451.03 and 111,864.31

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Solution

The fourth proportional to 202,502.02, 279,451.03 and 111,864.31 is: 154,371.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,502.02 : 279,451.03 = 111,864.31 : x
  2. Step 2: Convert to fraction form
    202,502.02/279,451.03 = 111,864.31/x
  3. Step 3: Cross multiply
    202,502.02x = 279,451.03 × 111,864.31
  4. Step 4: Simplify right side
    202,502.02x = 31,260,596,649.74
  5. Step 5: Solve for x
    x = 31,260,596,649.74/202,502.02
  6. Step 6: Final answer
    x = 154,371.78

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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.