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Finding the Fourth Proportional to 483,716.40, 725,574.60 and 128,766.30

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Solution

The fourth proportional to 483,716.40, 725,574.60 and 128,766.30 is: 193,149.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,716.40 : 725,574.60 = 128,766.30 : x
  2. Step 2: Convert to fraction form
    483,716.40/725,574.60 = 128,766.30/x
  3. Step 3: Cross multiply
    483,716.40x = 725,574.60 × 128,766.30
  4. Step 4: Simplify right side
    483,716.40x = 93,429,556,615.98
  5. Step 5: Solve for x
    x = 93,429,556,615.98/483,716.40
  6. Step 6: Final answer
    x = 193,149.45

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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.