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Finding the Fourth Proportional to 521,255.68, 719,410.20 and 330,286.96

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Solution

The fourth proportional to 521,255.68, 719,410.20 and 330,286.96 is: 455,845.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,255.68 : 719,410.20 = 330,286.96 : x
  2. Step 2: Convert to fraction form
    521,255.68/719,410.20 = 330,286.96/x
  3. Step 3: Cross multiply
    521,255.68x = 719,410.20 × 330,286.96
  4. Step 4: Simplify right side
    521,255.68x = 237,611,807,950.99
  5. Step 5: Solve for x
    x = 237,611,807,950.99/521,255.68
  6. Step 6: Final answer
    x = 455,845.02

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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.