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Finding the Fourth Proportional to 208,473.28, 287,693.38 and 112,979.98

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Solution

The fourth proportional to 208,473.28, 287,693.38 and 112,979.98 is: 155,912.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,473.28 : 287,693.38 = 112,979.98 : x
  2. Step 2: Convert to fraction form
    208,473.28/287,693.38 = 112,979.98/x
  3. Step 3: Cross multiply
    208,473.28x = 287,693.38 × 112,979.98
  4. Step 4: Simplify right side
    208,473.28x = 32,503,592,318.53
  5. Step 5: Solve for x
    x = 32,503,592,318.53/208,473.28
  6. Step 6: Final answer
    x = 155,912.51

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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.