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Finding the Fourth Proportional to 313,320.17, 469,998.52 and 88,661.81

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Solution

The fourth proportional to 313,320.17, 469,998.52 and 88,661.81 is: 132,997.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,320.17 : 469,998.52 = 88,661.81 : x
  2. Step 2: Convert to fraction form
    313,320.17/469,998.52 = 88,661.81/x
  3. Step 3: Cross multiply
    313,320.17x = 469,998.52 × 88,661.81
  4. Step 4: Simplify right side
    313,320.17x = 41,670,916,908.87
  5. Step 5: Solve for x
    x = 41,670,916,908.87/313,320.17
  6. Step 6: Final answer
    x = 132,997.88

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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.