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Finding the Fourth Proportional to 223,473.81, 308,399.93 and 121,506.15

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Solution

The fourth proportional to 223,473.81, 308,399.93 and 121,506.15 is: 167,681.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,473.81 : 308,399.93 = 121,506.15 : x
  2. Step 2: Convert to fraction form
    223,473.81/308,399.93 = 121,506.15/x
  3. Step 3: Cross multiply
    223,473.81x = 308,399.93 × 121,506.15
  4. Step 4: Simplify right side
    223,473.81x = 37,472,486,005.04
  5. Step 5: Solve for x
    x = 37,472,486,005.04/223,473.81
  6. Step 6: Final answer
    x = 167,681.78

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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.