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Finding the Fourth Proportional to 336,991.72, 505,681.79 and 187,219.35

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Solution

The fourth proportional to 336,991.72, 505,681.79 and 187,219.35 is: 280,936.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,991.72 : 505,681.79 = 187,219.35 : x
  2. Step 2: Convert to fraction form
    336,991.72/505,681.79 = 187,219.35/x
  3. Step 3: Cross multiply
    336,991.72x = 505,681.79 × 187,219.35
  4. Step 4: Simplify right side
    336,991.72x = 94,673,415,094.54
  5. Step 5: Solve for x
    x = 94,673,415,094.54/336,991.72
  6. Step 6: Final answer
    x = 280,936.92

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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.