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Finding the Fourth Proportional to 279,454.34, 385,700.14 and 158,606.96

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Solution

The fourth proportional to 279,454.34, 385,700.14 and 158,606.96 is: 218,907.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,454.34 : 385,700.14 = 158,606.96 : x
  2. Step 2: Convert to fraction form
    279,454.34/385,700.14 = 158,606.96/x
  3. Step 3: Cross multiply
    279,454.34x = 385,700.14 × 158,606.96
  4. Step 4: Simplify right side
    279,454.34x = 61,174,726,676.97
  5. Step 5: Solve for x
    x = 61,174,726,676.97/279,454.34
  6. Step 6: Final answer
    x = 218,907.77

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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.