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Finding the Fourth Proportional to 285,110.40, 427,665.60 and 255,561.60

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Solution

The fourth proportional to 285,110.40, 427,665.60 and 255,561.60 is: 383,342.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,110.40 : 427,665.60 = 255,561.60 : x
  2. Step 2: Convert to fraction form
    285,110.40/427,665.60 = 255,561.60/x
  3. Step 3: Cross multiply
    285,110.40x = 427,665.60 × 255,561.60
  4. Step 4: Simplify right side
    285,110.40x = 109,294,905,000.96
  5. Step 5: Solve for x
    x = 109,294,905,000.96/285,110.40
  6. Step 6: Final answer
    x = 383,342.40

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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.