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Finding the Fourth Proportional to 490,625.70, 735,391.80 and 191,006.70

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Solution

The fourth proportional to 490,625.70, 735,391.80 and 191,006.70 is: 286,297.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,625.70 : 735,391.80 = 191,006.70 : x
  2. Step 2: Convert to fraction form
    490,625.70/735,391.80 = 191,006.70/x
  3. Step 3: Cross multiply
    490,625.70x = 735,391.80 × 191,006.70
  4. Step 4: Simplify right side
    490,625.70x = 140,464,760,925.06
  5. Step 5: Solve for x
    x = 140,464,760,925.06/490,625.70
  6. Step 6: Final answer
    x = 286,297.19

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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.