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Finding the Fourth Proportional to 223,347.20, 308,220.36 and 121,373.48

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Solution

The fourth proportional to 223,347.20, 308,220.36 and 121,373.48 is: 167,496.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,347.20 : 308,220.36 = 121,373.48 : x
  2. Step 2: Convert to fraction form
    223,347.20/308,220.36 = 121,373.48/x
  3. Step 3: Cross multiply
    223,347.20x = 308,220.36 × 121,373.48
  4. Step 4: Simplify right side
    223,347.20x = 37,409,777,700.05
  5. Step 5: Solve for x
    x = 37,409,777,700.05/223,347.20
  6. Step 6: Final answer
    x = 167,496.07

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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.