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Finding the Fourth Proportional to 202,640.94, 279,679.22 and 117,807.21

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Solution

The fourth proportional to 202,640.94, 279,679.22 and 117,807.21 is: 162,594.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,640.94 : 279,679.22 = 117,807.21 : x
  2. Step 2: Convert to fraction form
    202,640.94/279,679.22 = 117,807.21/x
  3. Step 3: Cross multiply
    202,640.94x = 279,679.22 × 117,807.21
  4. Step 4: Simplify right side
    202,640.94x = 32,948,228,603.18
  5. Step 5: Solve for x
    x = 32,948,228,603.18/202,640.94
  6. Step 6: Final answer
    x = 162,594.14

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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.