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Finding the Fourth Proportional to 228,300.95, 315,033.86 and 154,563.39

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Solution

The fourth proportional to 228,300.95, 315,033.86 and 154,563.39 is: 213,282.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,300.95 : 315,033.86 = 154,563.39 : x
  2. Step 2: Convert to fraction form
    228,300.95/315,033.86 = 154,563.39/x
  3. Step 3: Cross multiply
    228,300.95x = 315,033.86 × 154,563.39
  4. Step 4: Simplify right side
    228,300.95x = 48,692,701,752.79
  5. Step 5: Solve for x
    x = 48,692,701,752.79/228,300.95
  6. Step 6: Final answer
    x = 213,282.95

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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.