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Finding the Fourth Proportional to 221,468.30, 331,327.65 and 192,211.10

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Solution

The fourth proportional to 221,468.30, 331,327.65 and 192,211.10 is: 287,557.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,468.30 : 331,327.65 = 192,211.10 : x
  2. Step 2: Convert to fraction form
    221,468.30/331,327.65 = 192,211.10/x
  3. Step 3: Cross multiply
    221,468.30x = 331,327.65 × 192,211.10
  4. Step 4: Simplify right side
    221,468.30x = 63,684,852,066.92
  5. Step 5: Solve for x
    x = 63,684,852,066.92/221,468.30
  6. Step 6: Final answer
    x = 287,557.42

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1.5x scale

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.