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Finding the Fourth Proportional to 279,593.28, 385,848 and 158,739.84

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Solution

The fourth proportional to 279,593.28, 385,848 and 158,739.84 is: 219,066.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,593.28 : 385,848 = 158,739.84 : x
  2. Step 2: Convert to fraction form
    279,593.28/385,848 = 158,739.84/x
  3. Step 3: Cross multiply
    279,593.28x = 385,848 × 158,739.84
  4. Step 4: Simplify right side
    279,593.28x = 61,249,449,784.32
  5. Step 5: Solve for x
    x = 61,249,449,784.32/279,593.28
  6. Step 6: Final answer
    x = 219,066.24

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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.