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Finding the Fourth Proportional to 323,827.80, 485,734.40 and 87,173.36

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Solution

The fourth proportional to 323,827.80, 485,734.40 and 87,173.36 is: 130,758.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,827.80 : 485,734.40 = 87,173.36 : x
  2. Step 2: Convert to fraction form
    323,827.80/485,734.40 = 87,173.36/x
  3. Step 3: Cross multiply
    323,827.80x = 485,734.40 × 87,173.36
  4. Step 4: Simplify right side
    323,827.80x = 42,343,099,715.58
  5. Step 5: Solve for x
    x = 42,343,099,715.58/323,827.80
  6. Step 6: Final answer
    x = 130,758.07

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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.