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Finding the Fourth Proportional to 323,464.59, 485,130.06 and 86,751

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Solution

The fourth proportional to 323,464.59, 485,130.06 and 86,751 is: 130,108.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,464.59 : 485,130.06 = 86,751 : x
  2. Step 2: Convert to fraction form
    323,464.59/485,130.06 = 86,751/x
  3. Step 3: Cross multiply
    323,464.59x = 485,130.06 × 86,751
  4. Step 4: Simplify right side
    323,464.59x = 42,085,517,835.06
  5. Step 5: Solve for x
    x = 42,085,517,835.06/323,464.59
  6. Step 6: Final answer
    x = 130,108.58

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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.