Home / 258,455.22-388,125.70-140,357.22

Finding the Fourth Proportional to 258,455.22, 388,125.70 and 140,357.22

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Solution

The fourth proportional to 258,455.22, 388,125.70 and 140,357.22 is: 210,776.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,455.22 : 388,125.70 = 140,357.22 : x
  2. Step 2: Convert to fraction form
    258,455.22/388,125.70 = 140,357.22/x
  3. Step 3: Cross multiply
    258,455.22x = 388,125.70 × 140,357.22
  4. Step 4: Simplify right side
    258,455.22x = 54,476,244,262.55
  5. Step 5: Solve for x
    x = 54,476,244,262.55/258,455.22
  6. Step 6: Final answer
    x = 210,776.34

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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.