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Finding the Fourth Proportional to 208,185.84, 287,296.38 and 112,693.32

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Solution

The fourth proportional to 208,185.84, 287,296.38 and 112,693.32 is: 155,516.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,185.84 : 287,296.38 = 112,693.32 : x
  2. Step 2: Convert to fraction form
    208,185.84/287,296.38 = 112,693.32/x
  3. Step 3: Cross multiply
    208,185.84x = 287,296.38 × 112,693.32
  4. Step 4: Simplify right side
    208,185.84x = 32,376,382,886.18
  5. Step 5: Solve for x
    x = 32,376,382,886.18/208,185.84
  6. Step 6: Final answer
    x = 155,516.74

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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.