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Finding the Fourth Proportional to 415,425.60, 573,286.60 and 224,438.40

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Solution

The fourth proportional to 415,425.60, 573,286.60 and 224,438.40 is: 309,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,425.60 : 573,286.60 = 224,438.40 : x
  2. Step 2: Convert to fraction form
    415,425.60/573,286.60 = 224,438.40/x
  3. Step 3: Cross multiply
    415,425.60x = 573,286.60 × 224,438.40
  4. Step 4: Simplify right side
    415,425.60x = 128,667,527,245.44
  5. Step 5: Solve for x
    x = 128,667,527,245.44/415,425.60
  6. Step 6: Final answer
    x = 309,724.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.