Home / 215,905.54-297,950.13-120,418.38

Finding the Fourth Proportional to 215,905.54, 297,950.13 and 120,418.38

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Solution

The fourth proportional to 215,905.54, 297,950.13 and 120,418.38 is: 166,177.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,905.54 : 297,950.13 = 120,418.38 : x
  2. Step 2: Convert to fraction form
    215,905.54/297,950.13 = 120,418.38/x
  3. Step 3: Cross multiply
    215,905.54x = 297,950.13 × 120,418.38
  4. Step 4: Simplify right side
    215,905.54x = 35,878,671,975.39
  5. Step 5: Solve for x
    x = 35,878,671,975.39/215,905.54
  6. Step 6: Final answer
    x = 166,177.63

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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.