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Finding the Fourth Proportional to 490,392.28, 735,675.90 and 191,035.72

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Solution

The fourth proportional to 490,392.28, 735,675.90 and 191,035.72 is: 286,587.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,392.28 : 735,675.90 = 191,035.72 : x
  2. Step 2: Convert to fraction form
    490,392.28/735,675.90 = 191,035.72/x
  3. Step 3: Cross multiply
    490,392.28x = 735,675.90 × 191,035.72
  4. Step 4: Simplify right side
    490,392.28x = 140,540,375,243.15
  5. Step 5: Solve for x
    x = 140,540,375,243.15/490,392.28
  6. Step 6: Final answer
    x = 286,587.66

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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.