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Finding the Fourth Proportional to 258,752.07, 388,005.21 and 90,251.94

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Solution

The fourth proportional to 258,752.07, 388,005.21 and 90,251.94 is: 135,335.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,752.07 : 388,005.21 = 90,251.94 : x
  2. Step 2: Convert to fraction form
    258,752.07/388,005.21 = 90,251.94/x
  3. Step 3: Cross multiply
    258,752.07x = 388,005.21 × 90,251.94
  4. Step 4: Simplify right side
    258,752.07x = 35,018,222,932.61
  5. Step 5: Solve for x
    x = 35,018,222,932.61/258,752.07
  6. Step 6: Final answer
    x = 135,335.04

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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.