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Finding the Fourth Proportional to 401,699.68, 554,394.72 and 231,933.52

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Solution

The fourth proportional to 401,699.68, 554,394.72 and 231,933.52 is: 320,096.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,699.68 : 554,394.72 = 231,933.52 : x
  2. Step 2: Convert to fraction form
    401,699.68/554,394.72 = 231,933.52/x
  3. Step 3: Cross multiply
    401,699.68x = 554,394.72 × 231,933.52
  4. Step 4: Simplify right side
    401,699.68x = 128,582,718,879.01
  5. Step 5: Solve for x
    x = 128,582,718,879.01/401,699.68
  6. Step 6: Final answer
    x = 320,096.64

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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.