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Finding the Fourth Proportional to 320,125.62, 476,620.47 and 315,654.91

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Solution

The fourth proportional to 320,125.62, 476,620.47 and 315,654.91 is: 469,964.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,125.62 : 476,620.47 = 315,654.91 : x
  2. Step 2: Convert to fraction form
    320,125.62/476,620.47 = 315,654.91/x
  3. Step 3: Cross multiply
    320,125.62x = 476,620.47 × 315,654.91
  4. Step 4: Simplify right side
    320,125.62x = 150,447,591,049.53
  5. Step 5: Solve for x
    x = 150,447,591,049.53/320,125.62
  6. Step 6: Final answer
    x = 469,964.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.