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Finding the Fourth Proportional to 419,710.68, 579,183.66 and 228,719.88

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Solution

The fourth proportional to 419,710.68, 579,183.66 and 228,719.88 is: 315,624.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,710.68 : 579,183.66 = 228,719.88 : x
  2. Step 2: Convert to fraction form
    419,710.68/579,183.66 = 228,719.88/x
  3. Step 3: Cross multiply
    419,710.68x = 579,183.66 × 228,719.88
  4. Step 4: Simplify right side
    419,710.68x = 132,470,817,213.16
  5. Step 5: Solve for x
    x = 132,470,817,213.16/419,710.68
  6. Step 6: Final answer
    x = 315,624.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.