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Finding the Fourth Proportional to 272,681.91, 409,043.39 and 72,997.88

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Solution

The fourth proportional to 272,681.91, 409,043.39 and 72,997.88 is: 109,502.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,681.91 : 409,043.39 = 72,997.88 : x
  2. Step 2: Convert to fraction form
    272,681.91/409,043.39 = 72,997.88/x
  3. Step 3: Cross multiply
    272,681.91x = 409,043.39 × 72,997.88
  4. Step 4: Simplify right side
    272,681.91x = 29,859,297,887.81
  5. Step 5: Solve for x
    x = 29,859,297,887.81/272,681.91
  6. Step 6: Final answer
    x = 109,502.31

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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.