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Finding the Fourth Proportional to 315,947.17, 436,015.47 and 188,696.17

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Solution

The fourth proportional to 315,947.17, 436,015.47 and 188,696.17 is: 260,405.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,947.17 : 436,015.47 = 188,696.17 : x
  2. Step 2: Convert to fraction form
    315,947.17/436,015.47 = 188,696.17/x
  3. Step 3: Cross multiply
    315,947.17x = 436,015.47 × 188,696.17
  4. Step 4: Simplify right side
    315,947.17x = 82,274,449,249.75
  5. Step 5: Solve for x
    x = 82,274,449,249.75/315,947.17
  6. Step 6: Final answer
    x = 260,405.72

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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.