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Finding the Fourth Proportional to 263,471.78, 395,248.98 and 85,937.80

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Solution

The fourth proportional to 263,471.78, 395,248.98 and 85,937.80 is: 128,920.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,471.78 : 395,248.98 = 85,937.80 : x
  2. Step 2: Convert to fraction form
    263,471.78/395,248.98 = 85,937.80/x
  3. Step 3: Cross multiply
    263,471.78x = 395,248.98 × 85,937.80
  4. Step 4: Simplify right side
    263,471.78x = 33,966,825,387.51
  5. Step 5: Solve for x
    x = 33,966,825,387.51/263,471.78
  6. Step 6: Final answer
    x = 128,920.17

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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.