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Finding the Fourth Proportional to 323,647.17, 485,392.79 and 99,009.54

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Solution

The fourth proportional to 323,647.17, 485,392.79 and 99,009.54 is: 148,490.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,647.17 : 485,392.79 = 99,009.54 : x
  2. Step 2: Convert to fraction form
    323,647.17/485,392.79 = 99,009.54/x
  3. Step 3: Cross multiply
    323,647.17x = 485,392.79 × 99,009.54
  4. Step 4: Simplify right side
    323,647.17x = 48,058,516,857.22
  5. Step 5: Solve for x
    x = 48,058,516,857.22/323,647.17
  6. Step 6: Final answer
    x = 148,490.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.