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Finding the Fourth Proportional to 279,410.34, 385,575.57 and 158,544.43

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Solution

The fourth proportional to 279,410.34, 385,575.57 and 158,544.43 is: 218,785.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,410.34 : 385,575.57 = 158,544.43 : x
  2. Step 2: Convert to fraction form
    279,410.34/385,575.57 = 158,544.43/x
  3. Step 3: Cross multiply
    279,410.34x = 385,575.57 × 158,544.43
  4. Step 4: Simplify right side
    279,410.34x = 61,130,858,003.64
  5. Step 5: Solve for x
    x = 61,130,858,003.64/279,410.34
  6. Step 6: Final answer
    x = 218,785.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.