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Finding the Fourth Proportional to 401,053, 553,453.16 and 239,914.84

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Solution

The fourth proportional to 401,053, 553,453.16 and 239,914.84 is: 331,082.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,053 : 553,453.16 = 239,914.84 : x
  2. Step 2: Convert to fraction form
    401,053/553,453.16 = 239,914.84/x
  3. Step 3: Cross multiply
    401,053x = 553,453.16 × 239,914.84
  4. Step 4: Simplify right side
    401,053x = 132,781,626,328.89
  5. Step 5: Solve for x
    x = 132,781,626,328.89/401,053
  6. Step 6: Final answer
    x = 331,082.49

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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.