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Finding the Fourth Proportional to 401,093.60, 553,362.72 and 239,953.28

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Solution

The fourth proportional to 401,093.60, 553,362.72 and 239,953.28 is: 331,047.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,093.60 : 553,362.72 = 239,953.28 : x
  2. Step 2: Convert to fraction form
    401,093.60/553,362.72 = 239,953.28/x
  3. Step 3: Cross multiply
    401,093.60x = 553,362.72 × 239,953.28
  4. Step 4: Simplify right side
    401,093.60x = 132,781,199,693.72
  5. Step 5: Solve for x
    x = 132,781,199,693.72/401,093.60
  6. Step 6: Final answer
    x = 331,047.91

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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.