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Finding the Fourth Proportional to 490,490.79, 735,728.90 and 135,496.95

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Solution

The fourth proportional to 490,490.79, 735,728.90 and 135,496.95 is: 203,243.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,490.79 : 735,728.90 = 135,496.95 : x
  2. Step 2: Convert to fraction form
    490,490.79/735,728.90 = 135,496.95/x
  3. Step 3: Cross multiply
    490,490.79x = 735,728.90 × 135,496.95
  4. Step 4: Simplify right side
    490,490.79x = 99,689,021,299.37
  5. Step 5: Solve for x
    x = 99,689,021,299.37/490,490.79
  6. Step 6: Final answer
    x = 203,243.41

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1.5x scale

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.