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Finding the Fourth Proportional to 279,087.42, 418,600.00 and 76,699.04

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Solution

The fourth proportional to 279,087.42, 418,600.00 and 76,699.04 is: 115,040.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,087.42 : 418,600.00 = 76,699.04 : x
  2. Step 2: Convert to fraction form
    279,087.42/418,600.00 = 76,699.04/x
  3. Step 3: Cross multiply
    279,087.42x = 418,600.00 × 76,699.04
  4. Step 4: Simplify right side
    279,087.42x = 32,106,216,146.87
  5. Step 5: Solve for x
    x = 32,106,216,146.87/279,087.42
  6. Step 6: Final answer
    x = 115,040.00

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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.