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Finding the Fourth Proportional to 258,752.58, 388,005.96 and 90,252.44

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Solution

The fourth proportional to 258,752.58, 388,005.96 and 90,252.44 is: 135,335.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,752.58 : 388,005.96 = 90,252.44 : x
  2. Step 2: Convert to fraction form
    258,752.58/388,005.96 = 90,252.44/x
  3. Step 3: Cross multiply
    258,752.58x = 388,005.96 × 90,252.44
  4. Step 4: Simplify right side
    258,752.58x = 35,018,484,624.54
  5. Step 5: Solve for x
    x = 35,018,484,624.54/258,752.58
  6. Step 6: Final answer
    x = 135,335.79

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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.