Home / 258,849.32-388,387.04-90,490.52

Finding the Fourth Proportional to 258,849.32, 388,387.04 and 90,490.52

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Solution

The fourth proportional to 258,849.32, 388,387.04 and 90,490.52 is: 135,775.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,849.32 : 388,387.04 = 90,490.52 : x
  2. Step 2: Convert to fraction form
    258,849.32/388,387.04 = 90,490.52/x
  3. Step 3: Cross multiply
    258,849.32x = 388,387.04 × 90,490.52
  4. Step 4: Simplify right side
    258,849.32x = 35,145,345,210.86
  5. Step 5: Solve for x
    x = 35,145,345,210.86/258,849.32
  6. Step 6: Final answer
    x = 135,775.30

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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.