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Finding the Fourth Proportional to 215,166.60, 322,628.40 and 82,051.20

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Solution

The fourth proportional to 215,166.60, 322,628.40 and 82,051.20 is: 123,030.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,166.60 : 322,628.40 = 82,051.20 : x
  2. Step 2: Convert to fraction form
    215,166.60/322,628.40 = 82,051.20/x
  3. Step 3: Cross multiply
    215,166.60x = 322,628.40 × 82,051.20
  4. Step 4: Simplify right side
    215,166.60x = 26,472,047,374.08
  5. Step 5: Solve for x
    x = 26,472,047,374.08/215,166.60
  6. Step 6: Final answer
    x = 123,030.47

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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.