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Finding the Fourth Proportional to 279,692.34, 385,978.08 and 158,836.14

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Solution

The fourth proportional to 279,692.34, 385,978.08 and 158,836.14 is: 219,195.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,692.34 : 385,978.08 = 158,836.14 : x
  2. Step 2: Convert to fraction form
    279,692.34/385,978.08 = 158,836.14/x
  3. Step 3: Cross multiply
    279,692.34x = 385,978.08 × 158,836.14
  4. Step 4: Simplify right side
    279,692.34x = 61,307,268,351.81
  5. Step 5: Solve for x
    x = 61,307,268,351.81/279,692.34
  6. Step 6: Final answer
    x = 219,195.38

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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.