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Finding the Fourth Proportional to 401,013, 553,397.94 and 239,874.84

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Solution

The fourth proportional to 401,013, 553,397.94 and 239,874.84 is: 331,027.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,013 : 553,397.94 = 239,874.84 : x
  2. Step 2: Convert to fraction form
    401,013/553,397.94 = 239,874.84/x
  3. Step 3: Cross multiply
    401,013x = 553,397.94 × 239,874.84
  4. Step 4: Simplify right side
    401,013x = 132,746,242,313.83
  5. Step 5: Solve for x
    x = 132,746,242,313.83/401,013
  6. Step 6: Final answer
    x = 331,027.28

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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.