Home / 258,198,261.39-356,303,259.27-140,721,128.82

Finding the Fourth Proportional to 258,198,261.39, 356,303,259.27 and 140,721,128.82

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Solution

The fourth proportional to 258,198,261.39, 356,303,259.27 and 140,721,128.82 is: 194,189,521.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,198,261.39 : 356,303,259.27 = 140,721,128.82 : x
  2. Step 2: Convert to fraction form
    258,198,261.39/356,303,259.27 = 140,721,128.82/x
  3. Step 3: Cross multiply
    258,198,261.39x = 356,303,259.27 × 140,721,128.82
  4. Step 4: Simplify right side
    258,198,261.39x = 50,139,396,846,719,520
  5. Step 5: Solve for x
    x = 50,139,396,846,719,520/258,198,261.39
  6. Step 6: Final answer
    x = 194,189,521.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.