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Finding the Fourth Proportional to 279,036.68, 418,510.22 and 76,585.50

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Solution

The fourth proportional to 279,036.68, 418,510.22 and 76,585.50 is: 114,865.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,036.68 : 418,510.22 = 76,585.50 : x
  2. Step 2: Convert to fraction form
    279,036.68/418,510.22 = 76,585.50/x
  3. Step 3: Cross multiply
    279,036.68x = 418,510.22 × 76,585.50
  4. Step 4: Simplify right side
    279,036.68x = 32,051,814,070.88
  5. Step 5: Solve for x
    x = 32,051,814,070.88/279,036.68
  6. Step 6: Final answer
    x = 114,865.95

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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.