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Finding the Fourth Proportional to 283,728.40, 425,592.60 and 257,923.60

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Solution

The fourth proportional to 283,728.40, 425,592.60 and 257,923.60 is: 386,885.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,728.40 : 425,592.60 = 257,923.60 : x
  2. Step 2: Convert to fraction form
    283,728.40/425,592.60 = 257,923.60/x
  3. Step 3: Cross multiply
    283,728.40x = 425,592.60 × 257,923.60
  4. Step 4: Simplify right side
    283,728.40x = 109,770,375,525.36
  5. Step 5: Solve for x
    x = 109,770,375,525.36/283,728.40
  6. Step 6: Final answer
    x = 386,885.40

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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.