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Finding the Fourth Proportional to 215,008.31, 322,601.31 and 108,335.25

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Solution

The fourth proportional to 215,008.31, 322,601.31 and 108,335.25 is: 162,547.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,008.31 : 322,601.31 = 108,335.25 : x
  2. Step 2: Convert to fraction form
    215,008.31/322,601.31 = 108,335.25/x
  3. Step 3: Cross multiply
    215,008.31x = 322,601.31 × 108,335.25
  4. Step 4: Simplify right side
    215,008.31x = 34,949,093,569.18
  5. Step 5: Solve for x
    x = 34,949,093,569.18/215,008.31
  6. Step 6: Final answer
    x = 162,547.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.