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Finding the Fourth Proportional to 208,339.20, 287,508.11 and 112,845.92

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Solution

The fourth proportional to 208,339.20, 287,508.11 and 112,845.92 is: 155,727.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,339.20 : 287,508.11 = 112,845.92 : x
  2. Step 2: Convert to fraction form
    208,339.20/287,508.11 = 112,845.92/x
  3. Step 3: Cross multiply
    208,339.20x = 287,508.11 × 112,845.92
  4. Step 4: Simplify right side
    208,339.20x = 32,444,116,256.80
  5. Step 5: Solve for x
    x = 32,444,116,256.80/208,339.20
  6. Step 6: Final answer
    x = 155,727.38

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1.5x scale

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.