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Finding the Fourth Proportional to 404,611.60, 606,917.40 and 255,020.80

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Solution

The fourth proportional to 404,611.60, 606,917.40 and 255,020.80 is: 382,531.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,611.60 : 606,917.40 = 255,020.80 : x
  2. Step 2: Convert to fraction form
    404,611.60/606,917.40 = 255,020.80/x
  3. Step 3: Cross multiply
    404,611.60x = 606,917.40 × 255,020.80
  4. Step 4: Simplify right side
    404,611.60x = 154,776,560,881.92
  5. Step 5: Solve for x
    x = 154,776,560,881.92/404,611.60
  6. Step 6: Final answer
    x = 382,531.20

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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.