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Finding the Fourth Proportional to 208,201.71, 287,344.40 and 123,351.15

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Solution

The fourth proportional to 208,201.71, 287,344.40 and 123,351.15 is: 170,240.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,201.71 : 287,344.40 = 123,351.15 : x
  2. Step 2: Convert to fraction form
    208,201.71/287,344.40 = 123,351.15/x
  3. Step 3: Cross multiply
    208,201.71x = 287,344.40 × 123,351.15
  4. Step 4: Simplify right side
    208,201.71x = 35,444,261,569.30
  5. Step 5: Solve for x
    x = 35,444,261,569.30/208,201.71
  6. Step 6: Final answer
    x = 170,240.01

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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.