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Finding the Fourth Proportional to 317,962.80, 477,721.80 and 239,230.80

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Solution

The fourth proportional to 317,962.80, 477,721.80 and 239,230.80 is: 359,431.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,962.80 : 477,721.80 = 239,230.80 : x
  2. Step 2: Convert to fraction form
    317,962.80/477,721.80 = 239,230.80/x
  3. Step 3: Cross multiply
    317,962.80x = 477,721.80 × 239,230.80
  4. Step 4: Simplify right side
    317,962.80x = 114,285,768,391.44
  5. Step 5: Solve for x
    x = 114,285,768,391.44/317,962.80
  6. Step 6: Final answer
    x = 359,431.26

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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.