Home / 217,436.42-300,064.77-120,642.09

Finding the Fourth Proportional to 217,436.42, 300,064.77 and 120,642.09

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Solution

The fourth proportional to 217,436.42, 300,064.77 and 120,642.09 is: 166,487.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,436.42 : 300,064.77 = 120,642.09 : x
  2. Step 2: Convert to fraction form
    217,436.42/300,064.77 = 120,642.09/x
  3. Step 3: Cross multiply
    217,436.42x = 300,064.77 × 120,642.09
  4. Step 4: Simplify right side
    217,436.42x = 36,200,440,988.17
  5. Step 5: Solve for x
    x = 36,200,440,988.17/217,436.42
  6. Step 6: Final answer
    x = 166,487.48

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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.