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Finding the Fourth Proportional to 331,583.70, 497,568.54 and 139,444.32

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Solution

The fourth proportional to 331,583.70, 497,568.54 and 139,444.32 is: 209,247.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,583.70 : 497,568.54 = 139,444.32 : x
  2. Step 2: Convert to fraction form
    331,583.70/497,568.54 = 139,444.32/x
  3. Step 3: Cross multiply
    331,583.70x = 497,568.54 × 139,444.32
  4. Step 4: Simplify right side
    331,583.70x = 69,383,106,713.69
  5. Step 5: Solve for x
    x = 69,383,106,713.69/331,583.70
  6. Step 6: Final answer
    x = 209,247.64

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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.