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Finding the Fourth Proportional to 272,308.20, 407,879.10 and 219,820.20

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Solution

The fourth proportional to 272,308.20, 407,879.10 and 219,820.20 is: 329,259.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,308.20 : 407,879.10 = 219,820.20 : x
  2. Step 2: Convert to fraction form
    272,308.20/407,879.10 = 219,820.20/x
  3. Step 3: Cross multiply
    272,308.20x = 407,879.10 × 219,820.20
  4. Step 4: Simplify right side
    272,308.20x = 89,660,065,337.82
  5. Step 5: Solve for x
    x = 89,660,065,337.82/272,308.20
  6. Step 6: Final answer
    x = 329,259.51

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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.