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Finding the Fourth Proportional to 419,671.73, 579,146.56 and 228,685.07

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Solution

The fourth proportional to 419,671.73, 579,146.56 and 228,685.07 is: 315,585.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,671.73 : 579,146.56 = 228,685.07 : x
  2. Step 2: Convert to fraction form
    419,671.73/579,146.56 = 228,685.07/x
  3. Step 3: Cross multiply
    419,671.73x = 579,146.56 × 228,685.07
  4. Step 4: Simplify right side
    419,671.73x = 132,442,172,490.01
  5. Step 5: Solve for x
    x = 132,442,172,490.01/419,671.73
  6. Step 6: Final answer
    x = 315,585.16

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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.