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Finding the Fourth Proportional to 323,466.59, 485,133.06 and 86,753

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Solution

The fourth proportional to 323,466.59, 485,133.06 and 86,753 is: 130,111.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,466.59 : 485,133.06 = 86,753 : x
  2. Step 2: Convert to fraction form
    323,466.59/485,133.06 = 86,753/x
  3. Step 3: Cross multiply
    323,466.59x = 485,133.06 × 86,753
  4. Step 4: Simplify right side
    323,466.59x = 42,086,748,354.18
  5. Step 5: Solve for x
    x = 42,086,748,354.18/323,466.59
  6. Step 6: Final answer
    x = 130,111.58

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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.