Home / 311,152.25-428,486.63-270,297.81

Finding the Fourth Proportional to 311,152.25, 428,486.63 and 270,297.81

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Solution

The fourth proportional to 311,152.25, 428,486.63 and 270,297.81 is: 372,226.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,152.25 : 428,486.63 = 270,297.81 : x
  2. Step 2: Convert to fraction form
    311,152.25/428,486.63 = 270,297.81/x
  3. Step 3: Cross multiply
    311,152.25x = 428,486.63 × 270,297.81
  4. Step 4: Simplify right side
    311,152.25x = 115,818,996,351.79
  5. Step 5: Solve for x
    x = 115,818,996,351.79/311,152.25
  6. Step 6: Final answer
    x = 372,226.12

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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.