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Finding the Fourth Proportional to 272,295.20, 407,859.60 and 219,807.20

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Solution

The fourth proportional to 272,295.20, 407,859.60 and 219,807.20 is: 329,240.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,295.20 : 407,859.60 = 219,807.20 : x
  2. Step 2: Convert to fraction form
    272,295.20/407,859.60 = 219,807.20/x
  3. Step 3: Cross multiply
    272,295.20x = 407,859.60 × 219,807.20
  4. Step 4: Simplify right side
    272,295.20x = 89,650,476,669.12
  5. Step 5: Solve for x
    x = 89,650,476,669.12/272,295.20
  6. Step 6: Final answer
    x = 329,240.02

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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.