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Finding the Fourth Proportional to 225,055.58, 310,614.89 and 129,617.53

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Solution

The fourth proportional to 225,055.58, 310,614.89 and 129,617.53 is: 178,894.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,055.58 : 310,614.89 = 129,617.53 : x
  2. Step 2: Convert to fraction form
    225,055.58/310,614.89 = 129,617.53/x
  3. Step 3: Cross multiply
    225,055.58x = 310,614.89 × 129,617.53
  4. Step 4: Simplify right side
    225,055.58x = 40,261,133,398.40
  5. Step 5: Solve for x
    x = 40,261,133,398.40/225,055.58
  6. Step 6: Final answer
    x = 178,894.18

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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.