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Finding the Fourth Proportional to 208,220.71, 287,344.68 and 112,727.41

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Solution

The fourth proportional to 208,220.71, 287,344.68 and 112,727.41 is: 155,563.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,220.71 : 287,344.68 = 112,727.41 : x
  2. Step 2: Convert to fraction form
    208,220.71/287,344.68 = 112,727.41/x
  3. Step 3: Cross multiply
    208,220.71x = 287,344.68 × 112,727.41
  4. Step 4: Simplify right side
    208,220.71x = 32,391,621,553.68
  5. Step 5: Solve for x
    x = 32,391,621,553.68/208,220.71
  6. Step 6: Final answer
    x = 155,563.88

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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.