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Finding the Fourth Proportional to 223,051.78, 334,909.91 and 90,191.53

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Solution

The fourth proportional to 223,051.78, 334,909.91 and 90,191.53 is: 135,421.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,051.78 : 334,909.91 = 90,191.53 : x
  2. Step 2: Convert to fraction form
    223,051.78/334,909.91 = 90,191.53/x
  3. Step 3: Cross multiply
    223,051.78x = 334,909.91 × 90,191.53
  4. Step 4: Simplify right side
    223,051.78x = 30,206,037,195.06
  5. Step 5: Solve for x
    x = 30,206,037,195.06/223,051.78
  6. Step 6: Final answer
    x = 135,421.64

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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.