Home / 386,944.49-533,954.13-217,145.81

Finding the Fourth Proportional to 386,944.49, 533,954.13 and 217,145.81

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Solution

The fourth proportional to 386,944.49, 533,954.13 and 217,145.81 is: 299,644.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,944.49 : 533,954.13 = 217,145.81 : x
  2. Step 2: Convert to fraction form
    386,944.49/533,954.13 = 217,145.81/x
  3. Step 3: Cross multiply
    386,944.49x = 533,954.13 × 217,145.81
  4. Step 4: Simplify right side
    386,944.49x = 115,945,902,582.28
  5. Step 5: Solve for x
    x = 115,945,902,582.28/386,944.49
  6. Step 6: Final answer
    x = 299,644.79

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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.