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Finding the Fourth Proportional to 326,467.20, 489,700.80 and 168,643.20

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Solution

The fourth proportional to 326,467.20, 489,700.80 and 168,643.20 is: 252,964.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,467.20 : 489,700.80 = 168,643.20 : x
  2. Step 2: Convert to fraction form
    326,467.20/489,700.80 = 168,643.20/x
  3. Step 3: Cross multiply
    326,467.20x = 489,700.80 × 168,643.20
  4. Step 4: Simplify right side
    326,467.20x = 82,584,709,954.56
  5. Step 5: Solve for x
    x = 82,584,709,954.56/326,467.20
  6. Step 6: Final answer
    x = 252,964.80

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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.