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Finding the Fourth Proportional to 213,955.20, 320,835.60 and 95,565.60

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Solution

The fourth proportional to 213,955.20, 320,835.60 and 95,565.60 is: 143,304.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,955.20 : 320,835.60 = 95,565.60 : x
  2. Step 2: Convert to fraction form
    213,955.20/320,835.60 = 95,565.60/x
  3. Step 3: Cross multiply
    213,955.20x = 320,835.60 × 95,565.60
  4. Step 4: Simplify right side
    213,955.20x = 30,660,846,615.36
  5. Step 5: Solve for x
    x = 30,660,846,615.36/213,955.20
  6. Step 6: Final answer
    x = 143,304.98

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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.