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Finding the Fourth Proportional to 290,978.93, 401,323.44 and 189,037.23

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Solution

The fourth proportional to 290,978.93, 401,323.44 and 189,037.23 is: 260,723.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,978.93 : 401,323.44 = 189,037.23 : x
  2. Step 2: Convert to fraction form
    290,978.93/401,323.44 = 189,037.23/x
  3. Step 3: Cross multiply
    290,978.93x = 401,323.44 × 189,037.23
  4. Step 4: Simplify right side
    290,978.93x = 75,865,072,227.74
  5. Step 5: Solve for x
    x = 75,865,072,227.74/290,978.93
  6. Step 6: Final answer
    x = 260,723.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.