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Finding the Fourth Proportional to 225,289.26, 310,900.17 and 121,923.47

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Solution

The fourth proportional to 225,289.26, 310,900.17 and 121,923.47 is: 168,254.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,289.26 : 310,900.17 = 121,923.47 : x
  2. Step 2: Convert to fraction form
    225,289.26/310,900.17 = 121,923.47/x
  3. Step 3: Cross multiply
    225,289.26x = 310,900.17 × 121,923.47
  4. Step 4: Simplify right side
    225,289.26x = 37,906,027,549.99
  5. Step 5: Solve for x
    x = 37,906,027,549.99/225,289.26
  6. Step 6: Final answer
    x = 168,254.93

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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.