Home / 258,266.19-387,177.39-89,764.64

Finding the Fourth Proportional to 258,266.19, 387,177.39 and 89,764.64

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Solution

The fourth proportional to 258,266.19, 387,177.39 and 89,764.64 is: 134,569.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,266.19 : 387,177.39 = 89,764.64 : x
  2. Step 2: Convert to fraction form
    258,266.19/387,177.39 = 89,764.64/x
  3. Step 3: Cross multiply
    258,266.19x = 387,177.39 × 89,764.64
  4. Step 4: Simplify right side
    258,266.19x = 34,754,837,093.60
  5. Step 5: Solve for x
    x = 34,754,837,093.60/258,266.19
  6. Step 6: Final answer
    x = 134,569.83

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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.