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Finding the Fourth Proportional to 219,488.88, 329,670.72 and 207,109.92

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Solution

The fourth proportional to 219,488.88, 329,670.72 and 207,109.92 is: 311,077.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,488.88 : 329,670.72 = 207,109.92 : x
  2. Step 2: Convert to fraction form
    219,488.88/329,670.72 = 207,109.92/x
  3. Step 3: Cross multiply
    219,488.88x = 329,670.72 × 207,109.92
  4. Step 4: Simplify right side
    219,488.88x = 68,278,076,445.54
  5. Step 5: Solve for x
    x = 68,278,076,445.54/219,488.88
  6. Step 6: Final answer
    x = 311,077.61

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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.