Home / 258,717.32-388,052.19-69,170.90

Finding the Fourth Proportional to 258,717.32, 388,052.19 and 69,170.90

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Solution

The fourth proportional to 258,717.32, 388,052.19 and 69,170.90 is: 103,749.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,717.32 : 388,052.19 = 69,170.90 : x
  2. Step 2: Convert to fraction form
    258,717.32/388,052.19 = 69,170.90/x
  3. Step 3: Cross multiply
    258,717.32x = 388,052.19 × 69,170.90
  4. Step 4: Simplify right side
    258,717.32x = 26,841,917,483.55
  5. Step 5: Solve for x
    x = 26,841,917,483.55/258,717.32
  6. Step 6: Final answer
    x = 103,749.98

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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.