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Finding the Fourth Proportional to 490,078.80, 735,118.20 and 322,117.20

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Solution

The fourth proportional to 490,078.80, 735,118.20 and 322,117.20 is: 483,175.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,078.80 : 735,118.20 = 322,117.20 : x
  2. Step 2: Convert to fraction form
    490,078.80/735,118.20 = 322,117.20/x
  3. Step 3: Cross multiply
    490,078.80x = 735,118.20 × 322,117.20
  4. Step 4: Simplify right side
    490,078.80x = 236,794,216,253.04
  5. Step 5: Solve for x
    x = 236,794,216,253.04/490,078.80
  6. Step 6: Final answer
    x = 483,175.80

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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.