Home / 216,177.36-298,329.78-135,608.28

Finding the Fourth Proportional to 216,177.36, 298,329.78 and 135,608.28

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Solution

The fourth proportional to 216,177.36, 298,329.78 and 135,608.28 is: 187,142.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,177.36 : 298,329.78 = 135,608.28 : x
  2. Step 2: Convert to fraction form
    216,177.36/298,329.78 = 135,608.28/x
  3. Step 3: Cross multiply
    216,177.36x = 298,329.78 × 135,608.28
  4. Step 4: Simplify right side
    216,177.36x = 40,455,988,338.58
  5. Step 5: Solve for x
    x = 40,455,988,338.58/216,177.36
  6. Step 6: Final answer
    x = 187,142.58

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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.