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Finding the Fourth Proportional to 323,030.58, 484,507.71 and 86,391.60

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Solution

The fourth proportional to 323,030.58, 484,507.71 and 86,391.60 is: 129,577.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,030.58 : 484,507.71 = 86,391.60 : x
  2. Step 2: Convert to fraction form
    323,030.58/484,507.71 = 86,391.60/x
  3. Step 3: Cross multiply
    323,030.58x = 484,507.71 × 86,391.60
  4. Step 4: Simplify right side
    323,030.58x = 41,857,396,279.24
  5. Step 5: Solve for x
    x = 41,857,396,279.24/323,030.58
  6. Step 6: Final answer
    x = 129,577.19

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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.