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Finding the Fourth Proportional to 401,055, 553,455.92 and 239,916.84

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Solution

The fourth proportional to 401,055, 553,455.92 and 239,916.84 is: 331,085.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,055 : 553,455.92 = 239,916.84 : x
  2. Step 2: Convert to fraction form
    401,055/553,455.92 = 239,916.84/x
  3. Step 3: Cross multiply
    401,055x = 553,455.92 × 239,916.84
  4. Step 4: Simplify right side
    401,055x = 132,783,395,405.69
  5. Step 5: Solve for x
    x = 132,783,395,405.69/401,055
  6. Step 6: Final answer
    x = 331,085.25

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1.5x scale

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.