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Finding the Fourth Proportional to 223,239.78, 308,073.20 and 121,267.22

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Solution

The fourth proportional to 223,239.78, 308,073.20 and 121,267.22 is: 167,350.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,239.78 : 308,073.20 = 121,267.22 : x
  2. Step 2: Convert to fraction form
    223,239.78/308,073.20 = 121,267.22/x
  3. Step 3: Cross multiply
    223,239.78x = 308,073.20 × 121,267.22
  4. Step 4: Simplify right side
    223,239.78x = 37,359,178,373.80
  5. Step 5: Solve for x
    x = 37,359,178,373.80/223,239.78
  6. Step 6: Final answer
    x = 167,350.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.