Home / 340,717.28-469,932.72-320,626.40

Finding the Fourth Proportional to 340,717.28, 469,932.72 and 320,626.40

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Solution

The fourth proportional to 340,717.28, 469,932.72 and 320,626.40 is: 442,222.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,717.28 : 469,932.72 = 320,626.40 : x
  2. Step 2: Convert to fraction form
    340,717.28/469,932.72 = 320,626.40/x
  3. Step 3: Cross multiply
    340,717.28x = 469,932.72 × 320,626.40
  4. Step 4: Simplify right side
    340,717.28x = 150,672,836,255.81
  5. Step 5: Solve for x
    x = 150,672,836,255.81/340,717.28
  6. Step 6: Final answer
    x = 442,222.47

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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.