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Finding the Fourth Proportional to 490,623.70, 735,388.80 and 191,004.70

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Solution

The fourth proportional to 490,623.70, 735,388.80 and 191,004.70 is: 286,294.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,623.70 : 735,388.80 = 191,004.70 : x
  2. Step 2: Convert to fraction form
    490,623.70/735,388.80 = 191,004.70/x
  3. Step 3: Cross multiply
    490,623.70x = 735,388.80 × 191,004.70
  4. Step 4: Simplify right side
    490,623.70x = 140,462,717,127.36
  5. Step 5: Solve for x
    x = 140,462,717,127.36/490,623.70
  6. Step 6: Final answer
    x = 286,294.19

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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.