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Finding the Fourth Proportional to 279,817.30, 419,725.95 and 236,514.70

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Solution

The fourth proportional to 279,817.30, 419,725.95 and 236,514.70 is: 354,772.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,817.30 : 419,725.95 = 236,514.70 : x
  2. Step 2: Convert to fraction form
    279,817.30/419,725.95 = 236,514.70/x
  3. Step 3: Cross multiply
    279,817.30x = 419,725.95 × 236,514.70
  4. Step 4: Simplify right side
    279,817.30x = 99,271,357,146.47
  5. Step 5: Solve for x
    x = 99,271,357,146.47/279,817.30
  6. Step 6: Final answer
    x = 354,772.05

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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.