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Finding the Fourth Proportional to 279,607.19, 385,857.88 and 152,282.78

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Solution

The fourth proportional to 279,607.19, 385,857.88 and 152,282.78 is: 210,150.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,607.19 : 385,857.88 = 152,282.78 : x
  2. Step 2: Convert to fraction form
    279,607.19/385,857.88 = 152,282.78/x
  3. Step 3: Cross multiply
    279,607.19x = 385,857.88 × 152,282.78
  4. Step 4: Simplify right side
    279,607.19x = 58,759,511,958.73
  5. Step 5: Solve for x
    x = 58,759,511,958.73/279,607.19
  6. Step 6: Final answer
    x = 210,150.22

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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.