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Finding the Fourth Proportional to 239,326.90, 330,355.72 and 213,788.92

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Solution

The fourth proportional to 239,326.90, 330,355.72 and 213,788.92 is: 295,104.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,326.90 : 330,355.72 = 213,788.92 : x
  2. Step 2: Convert to fraction form
    239,326.90/330,355.72 = 213,788.92/x
  3. Step 3: Cross multiply
    239,326.90x = 330,355.72 × 213,788.92
  4. Step 4: Simplify right side
    239,326.90x = 70,626,391,452.82
  5. Step 5: Solve for x
    x = 70,626,391,452.82/239,326.90
  6. Step 6: Final answer
    x = 295,104.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.