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Finding the Fourth Proportional to 323,069.08, 484,603.52 and 86,405.64

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Solution

The fourth proportional to 323,069.08, 484,603.52 and 86,405.64 is: 129,608.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,069.08 : 484,603.52 = 86,405.64 : x
  2. Step 2: Convert to fraction form
    323,069.08/484,603.52 = 86,405.64/x
  3. Step 3: Cross multiply
    323,069.08x = 484,603.52 × 86,405.64
  4. Step 4: Simplify right side
    323,069.08x = 41,872,477,291.85
  5. Step 5: Solve for x
    x = 41,872,477,291.85/323,069.08
  6. Step 6: Final answer
    x = 129,608.43

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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.