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Finding the Fourth Proportional to 323,605.40, 485,026.84 and 145,904.36

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Solution

The fourth proportional to 323,605.40, 485,026.84 and 145,904.36 is: 218,684.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,605.40 : 485,026.84 = 145,904.36 : x
  2. Step 2: Convert to fraction form
    323,605.40/485,026.84 = 145,904.36/x
  3. Step 3: Cross multiply
    323,605.40x = 485,026.84 × 145,904.36
  4. Step 4: Simplify right side
    323,605.40x = 70,767,530,673.02
  5. Step 5: Solve for x
    x = 70,767,530,673.02/323,605.40
  6. Step 6: Final answer
    x = 218,684.64

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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.