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Finding the Fourth Proportional to 378,485.97, 567,716.59 and 153,779.95

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Solution

The fourth proportional to 378,485.97, 567,716.59 and 153,779.95 is: 230,664.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,485.97 : 567,716.59 = 153,779.95 : x
  2. Step 2: Convert to fraction form
    378,485.97/567,716.59 = 153,779.95/x
  3. Step 3: Cross multiply
    378,485.97x = 567,716.59 × 153,779.95
  4. Step 4: Simplify right side
    378,485.97x = 87,303,428,824.37
  5. Step 5: Solve for x
    x = 87,303,428,824.37/378,485.97
  6. Step 6: Final answer
    x = 230,664.90

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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.