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Finding the Fourth Proportional to 202,490.66, 279,439.79 and 111,846.39

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Solution

The fourth proportional to 202,490.66, 279,439.79 and 111,846.39 is: 154,349.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,490.66 : 279,439.79 = 111,846.39 : x
  2. Step 2: Convert to fraction form
    202,490.66/279,439.79 = 111,846.39/x
  3. Step 3: Cross multiply
    202,490.66x = 279,439.79 × 111,846.39
  4. Step 4: Simplify right side
    202,490.66x = 31,254,331,174.63
  5. Step 5: Solve for x
    x = 31,254,331,174.63/202,490.66
  6. Step 6: Final answer
    x = 154,349.50

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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.