Home / 287,277.06-431,112.42-100,288.56

Finding the Fourth Proportional to 287,277.06, 431,112.42 and 100,288.56

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Solution

The fourth proportional to 287,277.06, 431,112.42 and 100,288.56 is: 150,501.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,277.06 : 431,112.42 = 100,288.56 : x
  2. Step 2: Convert to fraction form
    287,277.06/431,112.42 = 100,288.56/x
  3. Step 3: Cross multiply
    287,277.06x = 431,112.42 × 100,288.56
  4. Step 4: Simplify right side
    287,277.06x = 43,235,643,799.92
  5. Step 5: Solve for x
    x = 43,235,643,799.92/287,277.06
  6. Step 6: Final answer
    x = 150,501.55

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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.