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Finding the Fourth Proportional to 419,775.60, 629,663.40 and 230,818.80

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Solution

The fourth proportional to 419,775.60, 629,663.40 and 230,818.80 is: 346,228.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,775.60 : 629,663.40 = 230,818.80 : x
  2. Step 2: Convert to fraction form
    419,775.60/629,663.40 = 230,818.80/x
  3. Step 3: Cross multiply
    419,775.60x = 629,663.40 × 230,818.80
  4. Step 4: Simplify right side
    419,775.60x = 145,338,150,391.92
  5. Step 5: Solve for x
    x = 145,338,150,391.92/419,775.60
  6. Step 6: Final answer
    x = 346,228.20

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Similar ratio
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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.