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Finding the Fourth Proportional to 208,394.77, 287,585.08 and 112,901.46

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Solution

The fourth proportional to 208,394.77, 287,585.08 and 112,901.46 is: 155,804.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,394.77 : 287,585.08 = 112,901.46 : x
  2. Step 2: Convert to fraction form
    208,394.77/287,585.08 = 112,901.46/x
  3. Step 3: Cross multiply
    208,394.77x = 287,585.08 × 112,901.46
  4. Step 4: Simplify right side
    208,394.77x = 32,468,775,406.22
  5. Step 5: Solve for x
    x = 32,468,775,406.22/208,394.77
  6. Step 6: Final answer
    x = 155,804.18

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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.