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Finding the Fourth Proportional to 208,426.98, 287,630.55 and 112,934.37

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Solution

The fourth proportional to 208,426.98, 287,630.55 and 112,934.37 is: 155,850.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,426.98 : 287,630.55 = 112,934.37 : x
  2. Step 2: Convert to fraction form
    208,426.98/287,630.55 = 112,934.37/x
  3. Step 3: Cross multiply
    208,426.98x = 287,630.55 × 112,934.37
  4. Step 4: Simplify right side
    208,426.98x = 32,483,374,957.00
  5. Step 5: Solve for x
    x = 32,483,374,957.00/208,426.98
  6. Step 6: Final answer
    x = 155,850.14

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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.