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Finding the Fourth Proportional to 344,354.70, 515,511.45 and 255,999.90

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Solution

The fourth proportional to 344,354.70, 515,511.45 and 255,999.90 is: 383,241.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,354.70 : 515,511.45 = 255,999.90 : x
  2. Step 2: Convert to fraction form
    344,354.70/515,511.45 = 255,999.90/x
  3. Step 3: Cross multiply
    344,354.70x = 515,511.45 × 255,999.90
  4. Step 4: Simplify right side
    344,354.70x = 131,970,879,648.86
  5. Step 5: Solve for x
    x = 131,970,879,648.86/344,354.70
  6. Step 6: Final answer
    x = 383,241.12

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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.