Home / 312,414.05-431,131.66-176,477.01

Finding the Fourth Proportional to 312,414.05, 431,131.66 and 176,477.01

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Solution

The fourth proportional to 312,414.05, 431,131.66 and 176,477.01 is: 243,538.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,414.05 : 431,131.66 = 176,477.01 : x
  2. Step 2: Convert to fraction form
    312,414.05/431,131.66 = 176,477.01/x
  3. Step 3: Cross multiply
    312,414.05x = 431,131.66 × 176,477.01
  4. Step 4: Simplify right side
    312,414.05x = 76,084,825,831.94
  5. Step 5: Solve for x
    x = 76,084,825,831.94/312,414.05
  6. Step 6: Final answer
    x = 243,538.43

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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.