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Finding the Fourth Proportional to 419,807.57, 579,333.06 and 228,820.97

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Solution

The fourth proportional to 419,807.57, 579,333.06 and 228,820.97 is: 315,772.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,807.57 : 579,333.06 = 228,820.97 : x
  2. Step 2: Convert to fraction form
    419,807.57/579,333.06 = 228,820.97/x
  3. Step 3: Cross multiply
    419,807.57x = 579,333.06 × 228,820.97
  4. Step 4: Simplify right side
    419,807.57x = 132,563,549,845.60
  5. Step 5: Solve for x
    x = 132,563,549,845.60/419,807.57
  6. Step 6: Final answer
    x = 315,772.18

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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.