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Finding the Fourth Proportional to 205,588.76, 308,428.48 and 87,361.16

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Solution

The fourth proportional to 205,588.76, 308,428.48 and 87,361.16 is: 131,061.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,588.76 : 308,428.48 = 87,361.16 : x
  2. Step 2: Convert to fraction form
    205,588.76/308,428.48 = 87,361.16/x
  3. Step 3: Cross multiply
    205,588.76x = 308,428.48 × 87,361.16
  4. Step 4: Simplify right side
    205,588.76x = 26,944,669,789.84
  5. Step 5: Solve for x
    x = 26,944,669,789.84/205,588.76
  6. Step 6: Final answer
    x = 131,061.01

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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.