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Finding the Fourth Proportional to 375,719.80, 563,571.93 and 91,411.85

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Solution

The fourth proportional to 375,719.80, 563,571.93 and 91,411.85 is: 137,115.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,719.80 : 563,571.93 = 91,411.85 : x
  2. Step 2: Convert to fraction form
    375,719.80/563,571.93 = 91,411.85/x
  3. Step 3: Cross multiply
    375,719.80x = 563,571.93 × 91,411.85
  4. Step 4: Simplify right side
    375,719.80x = 51,517,152,729.37
  5. Step 5: Solve for x
    x = 51,517,152,729.37/375,719.80
  6. Step 6: Final answer
    x = 137,115.88

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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.