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Finding the Fourth Proportional to 271,975.97, 407,963.87 and 84,987.47

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Solution

The fourth proportional to 271,975.97, 407,963.87 and 84,987.47 is: 127,481.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,975.97 : 407,963.87 = 84,987.47 : x
  2. Step 2: Convert to fraction form
    271,975.97/407,963.87 = 84,987.47/x
  3. Step 3: Cross multiply
    271,975.97x = 407,963.87 × 84,987.47
  4. Step 4: Simplify right side
    271,975.97x = 34,671,817,162.71
  5. Step 5: Solve for x
    x = 34,671,817,162.71/271,975.97
  6. Step 6: Final answer
    x = 127,481.18

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1.5x scale

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.