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Finding the Fourth Proportional to 208,223.80, 287,348.52 and 112,730.47

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Solution

The fourth proportional to 208,223.80, 287,348.52 and 112,730.47 is: 155,567.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,223.80 : 287,348.52 = 112,730.47 : x
  2. Step 2: Convert to fraction form
    208,223.80/287,348.52 = 112,730.47/x
  3. Step 3: Cross multiply
    208,223.80x = 287,348.52 × 112,730.47
  4. Step 4: Simplify right side
    208,223.80x = 32,392,933,713.40
  5. Step 5: Solve for x
    x = 32,392,933,713.40/208,223.80
  6. Step 6: Final answer
    x = 155,567.87

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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.