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Finding the Fourth Proportional to 279,483.58, 418,700.46 and 216,847.90

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Solution

The fourth proportional to 279,483.58, 418,700.46 and 216,847.90 is: 324,864.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,483.58 : 418,700.46 = 216,847.90 : x
  2. Step 2: Convert to fraction form
    279,483.58/418,700.46 = 216,847.90/x
  3. Step 3: Cross multiply
    279,483.58x = 418,700.46 × 216,847.90
  4. Step 4: Simplify right side
    279,483.58x = 90,794,315,480.03
  5. Step 5: Solve for x
    x = 90,794,315,480.03/279,483.58
  6. Step 6: Final answer
    x = 324,864.58

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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.