Home / 275,840.19-380,659.77-154,981.38

Finding the Fourth Proportional to 275,840.19, 380,659.77 and 154,981.38

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Solution

The fourth proportional to 275,840.19, 380,659.77 and 154,981.38 is: 213,874.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,840.19 : 380,659.77 = 154,981.38 : x
  2. Step 2: Convert to fraction form
    275,840.19/380,659.77 = 154,981.38/x
  3. Step 3: Cross multiply
    275,840.19x = 380,659.77 × 154,981.38
  4. Step 4: Simplify right side
    275,840.19x = 58,995,176,465.08
  5. Step 5: Solve for x
    x = 58,995,176,465.08/275,840.19
  6. Step 6: Final answer
    x = 213,874.48

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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.