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Finding the Fourth Proportional to 217,517.94, 300,303.45 and 137,014.47

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Solution

The fourth proportional to 217,517.94, 300,303.45 and 137,014.47 is: 189,161.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,517.94 : 300,303.45 = 137,014.47 : x
  2. Step 2: Convert to fraction form
    217,517.94/300,303.45 = 137,014.47/x
  3. Step 3: Cross multiply
    217,517.94x = 300,303.45 × 137,014.47
  4. Step 4: Simplify right side
    217,517.94x = 41,145,918,040.92
  5. Step 5: Solve for x
    x = 41,145,918,040.92/217,517.94
  6. Step 6: Final answer
    x = 189,161.03

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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.