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Finding the Fourth Proportional to 279,455.70, 419,054.96 and 89,881.04

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Solution

The fourth proportional to 279,455.70, 419,054.96 and 89,881.04 is: 134,780.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,455.70 : 419,054.96 = 89,881.04 : x
  2. Step 2: Convert to fraction form
    279,455.70/419,054.96 = 89,881.04/x
  3. Step 3: Cross multiply
    279,455.70x = 419,054.96 × 89,881.04
  4. Step 4: Simplify right side
    279,455.70x = 37,665,095,621.96
  5. Step 5: Solve for x
    x = 37,665,095,621.96/279,455.70
  6. Step 6: Final answer
    x = 134,780.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.