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Finding the Fourth Proportional to 640,441.08, 960,628.82 and 191,165.67

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Solution

The fourth proportional to 640,441.08, 960,628.82 and 191,165.67 is: 286,738.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,441.08 : 960,628.82 = 191,165.67 : x
  2. Step 2: Convert to fraction form
    640,441.08/960,628.82 = 191,165.67/x
  3. Step 3: Cross multiply
    640,441.08x = 960,628.82 × 191,165.67
  4. Step 4: Simplify right side
    640,441.08x = 183,639,251,040.78
  5. Step 5: Solve for x
    x = 183,639,251,040.78/640,441.08
  6. Step 6: Final answer
    x = 286,738.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.