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Finding the Fourth Proportional to 217,915.50, 300,739.80 and 133,048.97

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Solution

The fourth proportional to 217,915.50, 300,739.80 and 133,048.97 is: 183,617.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,915.50 : 300,739.80 = 133,048.97 : x
  2. Step 2: Convert to fraction form
    217,915.50/300,739.80 = 133,048.97/x
  3. Step 3: Cross multiply
    217,915.50x = 300,739.80 × 133,048.97
  4. Step 4: Simplify right side
    217,915.50x = 40,013,119,124.31
  5. Step 5: Solve for x
    x = 40,013,119,124.31/217,915.50
  6. Step 6: Final answer
    x = 183,617.59

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1.5x scale

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.