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Finding the Fourth Proportional to 223,220.68, 308,047.86 and 121,248.12

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Solution

The fourth proportional to 223,220.68, 308,047.86 and 121,248.12 is: 167,324.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,220.68 : 308,047.86 = 121,248.12 : x
  2. Step 2: Convert to fraction form
    223,220.68/308,047.86 = 121,248.12/x
  3. Step 3: Cross multiply
    223,220.68x = 308,047.86 × 121,248.12
  4. Step 4: Simplify right side
    223,220.68x = 37,350,225,050.20
  5. Step 5: Solve for x
    x = 37,350,225,050.20/223,220.68
  6. Step 6: Final answer
    x = 167,324.22

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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.