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Finding the Fourth Proportional to 223,637.88, 335,470.86 and 90,515.64

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Solution

The fourth proportional to 223,637.88, 335,470.86 and 90,515.64 is: 135,779.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,637.88 : 335,470.86 = 90,515.64 : x
  2. Step 2: Convert to fraction form
    223,637.88/335,470.86 = 90,515.64/x
  3. Step 3: Cross multiply
    223,637.88x = 335,470.86 × 90,515.64
  4. Step 4: Simplify right side
    223,637.88x = 30,365,359,594.25
  5. Step 5: Solve for x
    x = 30,365,359,594.25/223,637.88
  6. Step 6: Final answer
    x = 135,779.14

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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.