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Finding the Fourth Proportional to 208,353.92, 287,511.35 and 117,717.75

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Solution

The fourth proportional to 208,353.92, 287,511.35 and 117,717.75 is: 162,440.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,353.92 : 287,511.35 = 117,717.75 : x
  2. Step 2: Convert to fraction form
    208,353.92/287,511.35 = 117,717.75/x
  3. Step 3: Cross multiply
    208,353.92x = 287,511.35 × 117,717.75
  4. Step 4: Simplify right side
    208,353.92x = 33,845,188,632.87
  5. Step 5: Solve for x
    x = 33,845,188,632.87/208,353.92
  6. Step 6: Final answer
    x = 162,440.86

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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.