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Finding the Fourth Proportional to 216,065.70, 323,333.10 and 188,290.80

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Solution

The fourth proportional to 216,065.70, 323,333.10 and 188,290.80 is: 281,769.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,065.70 : 323,333.10 = 188,290.80 : x
  2. Step 2: Convert to fraction form
    216,065.70/323,333.10 = 188,290.80/x
  3. Step 3: Cross multiply
    216,065.70x = 323,333.10 × 188,290.80
  4. Step 4: Simplify right side
    216,065.70x = 60,880,648,065.48
  5. Step 5: Solve for x
    x = 60,880,648,065.48/216,065.70
  6. Step 6: Final answer
    x = 281,769.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.