Home / 258,748.07-387,999.21-90,247.94

Finding the Fourth Proportional to 258,748.07, 387,999.21 and 90,247.94

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Solution

The fourth proportional to 258,748.07, 387,999.21 and 90,247.94 is: 135,329.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,748.07 : 387,999.21 = 90,247.94 : x
  2. Step 2: Convert to fraction form
    258,748.07/387,999.21 = 90,247.94/x
  3. Step 3: Cross multiply
    258,748.07x = 387,999.21 × 90,247.94
  4. Step 4: Simplify right side
    258,748.07x = 35,016,129,424.13
  5. Step 5: Solve for x
    x = 35,016,129,424.13/258,748.07
  6. Step 6: Final answer
    x = 135,329.05

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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.