Home / 258,206.47-356,367.21-215,117.64

Finding the Fourth Proportional to 258,206.47, 356,367.21 and 215,117.64

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Solution

The fourth proportional to 258,206.47, 356,367.21 and 215,117.64 is: 296,897.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,206.47 : 356,367.21 = 215,117.64 : x
  2. Step 2: Convert to fraction form
    258,206.47/356,367.21 = 215,117.64/x
  3. Step 3: Cross multiply
    258,206.47x = 356,367.21 × 215,117.64
  4. Step 4: Simplify right side
    258,206.47x = 76,660,871,180.98
  5. Step 5: Solve for x
    x = 76,660,871,180.98/258,206.47
  6. Step 6: Final answer
    x = 296,897.56

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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.