Home / 816,109.60-1,224,164.40-255,200.80

Finding the Fourth Proportional to 816,109.60, 1,224,164.40 and 255,200.80

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Solution

The fourth proportional to 816,109.60, 1,224,164.40 and 255,200.80 is: 382,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,109.60 : 1,224,164.40 = 255,200.80 : x
  2. Step 2: Convert to fraction form
    816,109.60/1,224,164.40 = 255,200.80/x
  3. Step 3: Cross multiply
    816,109.60x = 1,224,164.40 × 255,200.80
  4. Step 4: Simplify right side
    816,109.60x = 312,407,734,211.52
  5. Step 5: Solve for x
    x = 312,407,734,211.52/816,109.60
  6. Step 6: Final answer
    x = 382,801.20

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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.