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Finding the Fourth Proportional to 323,536.31, 485,307.56 and 86,879.01

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Solution

The fourth proportional to 323,536.31, 485,307.56 and 86,879.01 is: 130,319.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,536.31 : 485,307.56 = 86,879.01 : x
  2. Step 2: Convert to fraction form
    323,536.31/485,307.56 = 86,879.01/x
  3. Step 3: Cross multiply
    323,536.31x = 485,307.56 × 86,879.01
  4. Step 4: Simplify right side
    323,536.31x = 42,163,040,575.51
  5. Step 5: Solve for x
    x = 42,163,040,575.51/323,536.31
  6. Step 6: Final answer
    x = 130,319.35

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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.