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Finding the Fourth Proportional to 419,688.18, 579,169.71 and 228,701.52

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Solution

The fourth proportional to 419,688.18, 579,169.71 and 228,701.52 is: 315,608.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,688.18 : 579,169.71 = 228,701.52 : x
  2. Step 2: Convert to fraction form
    419,688.18/579,169.71 = 228,701.52/x
  3. Step 3: Cross multiply
    419,688.18x = 579,169.71 × 228,701.52
  4. Step 4: Simplify right side
    419,688.18x = 132,456,993,014.96
  5. Step 5: Solve for x
    x = 132,456,993,014.96/419,688.18
  6. Step 6: Final answer
    x = 315,608.11

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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.