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Finding the Fourth Proportional to 388,452.40, 582,678.60 and 230,858.80

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Solution

The fourth proportional to 388,452.40, 582,678.60 and 230,858.80 is: 346,288.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,452.40 : 582,678.60 = 230,858.80 : x
  2. Step 2: Convert to fraction form
    388,452.40/582,678.60 = 230,858.80/x
  3. Step 3: Cross multiply
    388,452.40x = 582,678.60 × 230,858.80
  4. Step 4: Simplify right side
    388,452.40x = 134,516,482,381.68
  5. Step 5: Solve for x
    x = 134,516,482,381.68/388,452.40
  6. Step 6: Final answer
    x = 346,288.20

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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.