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Finding the Fourth Proportional to 215,412.48, 323,068.48 and 82,243.84

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Solution

The fourth proportional to 215,412.48, 323,068.48 and 82,243.84 is: 123,346.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,412.48 : 323,068.48 = 82,243.84 : x
  2. Step 2: Convert to fraction form
    215,412.48/323,068.48 = 82,243.84/x
  3. Step 3: Cross multiply
    215,412.48x = 323,068.48 × 82,243.84
  4. Step 4: Simplify right side
    215,412.48x = 26,570,392,378.16
  5. Step 5: Solve for x
    x = 26,570,392,378.16/215,412.48
  6. Step 6: Final answer
    x = 123,346.58

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1.5x scale

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.