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Finding the Fourth Proportional to 371,087.80, 512,149.39 and 207,806.47

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Solution

The fourth proportional to 371,087.80, 512,149.39 and 207,806.47 is: 286,799.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,087.80 : 512,149.39 = 207,806.47 : x
  2. Step 2: Convert to fraction form
    371,087.80/512,149.39 = 207,806.47/x
  3. Step 3: Cross multiply
    371,087.80x = 512,149.39 × 207,806.47
  4. Step 4: Simplify right side
    371,087.80x = 106,427,955,048.66
  5. Step 5: Solve for x
    x = 106,427,955,048.66/371,087.80
  6. Step 6: Final answer
    x = 286,799.93

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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.