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Finding the Fourth Proportional to 225,283.54, 310,890.46 and 121,917.53

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Solution

The fourth proportional to 225,283.54, 310,890.46 and 121,917.53 is: 168,245.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,283.54 : 310,890.46 = 121,917.53 : x
  2. Step 2: Convert to fraction form
    225,283.54/310,890.46 = 121,917.53/x
  3. Step 3: Cross multiply
    225,283.54x = 310,890.46 × 121,917.53
  4. Step 4: Simplify right side
    225,283.54x = 37,902,996,983.76
  5. Step 5: Solve for x
    x = 37,902,996,983.76/225,283.54
  6. Step 6: Final answer
    x = 168,245.74

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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.