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Finding the Fourth Proportional to 223,624.50, 308,607.42 and 121,655.70

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Solution

The fourth proportional to 223,624.50, 308,607.42 and 121,655.70 is: 167,887.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,624.50 : 308,607.42 = 121,655.70 : x
  2. Step 2: Convert to fraction form
    223,624.50/308,607.42 = 121,655.70/x
  3. Step 3: Cross multiply
    223,624.50x = 308,607.42 × 121,655.70
  4. Step 4: Simplify right side
    223,624.50x = 37,543,851,705.29
  5. Step 5: Solve for x
    x = 37,543,851,705.29/223,624.50
  6. Step 6: Final answer
    x = 167,887.92

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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.