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Finding the Fourth Proportional to 490,910.40, 736,754.40 and 191,534.40

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Solution

The fourth proportional to 490,910.40, 736,754.40 and 191,534.40 is: 287,453.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,910.40 : 736,754.40 = 191,534.40 : x
  2. Step 2: Convert to fraction form
    490,910.40/736,754.40 = 191,534.40/x
  3. Step 3: Cross multiply
    490,910.40x = 736,754.40 × 191,534.40
  4. Step 4: Simplify right side
    490,910.40x = 141,113,811,951.36
  5. Step 5: Solve for x
    x = 141,113,811,951.36/490,910.40
  6. Step 6: Final answer
    x = 287,453.29

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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.