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Finding the Fourth Proportional to 354,461.80, 531,231.90 and 255,850.60

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Solution

The fourth proportional to 354,461.80, 531,231.90 and 255,850.60 is: 383,443.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,461.80 : 531,231.90 = 255,850.60 : x
  2. Step 2: Convert to fraction form
    354,461.80/531,231.90 = 255,850.60/x
  3. Step 3: Cross multiply
    354,461.80x = 531,231.90 × 255,850.60
  4. Step 4: Simplify right side
    354,461.80x = 135,916,000,354.14
  5. Step 5: Solve for x
    x = 135,916,000,354.14/354,461.80
  6. Step 6: Final answer
    x = 383,443.29

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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.