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Finding the Fourth Proportional to 213,042.28, 319,448.22 and 65,279.08

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Solution

The fourth proportional to 213,042.28, 319,448.22 and 65,279.08 is: 97,883.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,042.28 : 319,448.22 = 65,279.08 : x
  2. Step 2: Convert to fraction form
    213,042.28/319,448.22 = 65,279.08/x
  3. Step 3: Cross multiply
    213,042.28x = 319,448.22 × 65,279.08
  4. Step 4: Simplify right side
    213,042.28x = 20,853,285,909.24
  5. Step 5: Solve for x
    x = 20,853,285,909.24/213,042.28
  6. Step 6: Final answer
    x = 97,883.32

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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.