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Finding the Fourth Proportional to 271,572.71, 407,335.13 and 121,772.79

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Solution

The fourth proportional to 271,572.71, 407,335.13 and 121,772.79 is: 182,648.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,572.71 : 407,335.13 = 121,772.79 : x
  2. Step 2: Convert to fraction form
    271,572.71/407,335.13 = 121,772.79/x
  3. Step 3: Cross multiply
    271,572.71x = 407,335.13 × 121,772.79
  4. Step 4: Simplify right side
    271,572.71x = 49,602,335,092.90
  5. Step 5: Solve for x
    x = 49,602,335,092.90/271,572.71
  6. Step 6: Final answer
    x = 182,648.46

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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.