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Finding the Fourth Proportional to 401,052.79, 553,400.17 and 239,849.02

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Solution

The fourth proportional to 401,052.79, 553,400.17 and 239,849.02 is: 330,960.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,052.79 : 553,400.17 = 239,849.02 : x
  2. Step 2: Convert to fraction form
    401,052.79/553,400.17 = 239,849.02/x
  3. Step 3: Cross multiply
    401,052.79x = 553,400.17 × 239,849.02
  4. Step 4: Simplify right side
    401,052.79x = 132,732,488,442.33
  5. Step 5: Solve for x
    x = 132,732,488,442.33/401,052.79
  6. Step 6: Final answer
    x = 330,960.14

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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.