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Finding the Fourth Proportional to 208,119.48, 287,217.86 and 117,490.80

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Solution

The fourth proportional to 208,119.48, 287,217.86 and 117,490.80 is: 162,144.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,119.48 : 287,217.86 = 117,490.80 : x
  2. Step 2: Convert to fraction form
    208,119.48/287,217.86 = 117,490.80/x
  3. Step 3: Cross multiply
    208,119.48x = 287,217.86 × 117,490.80
  4. Step 4: Simplify right side
    208,119.48x = 33,745,456,145.69
  5. Step 5: Solve for x
    x = 33,745,456,145.69/208,119.48
  6. Step 6: Final answer
    x = 162,144.63

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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.