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Finding the Fourth Proportional to 378,645.22, 567,870.63 and 112,342.74

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Solution

The fourth proportional to 378,645.22, 567,870.63 and 112,342.74 is: 168,485.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,645.22 : 567,870.63 = 112,342.74 : x
  2. Step 2: Convert to fraction form
    378,645.22/567,870.63 = 112,342.74/x
  3. Step 3: Cross multiply
    378,645.22x = 567,870.63 × 112,342.74
  4. Step 4: Simplify right side
    378,645.22x = 63,796,142,539.73
  5. Step 5: Solve for x
    x = 63,796,142,539.73/378,645.22
  6. Step 6: Final answer
    x = 168,485.27

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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.