Home / 217,436.09-300,064.23-120,641.72

Finding the Fourth Proportional to 217,436.09, 300,064.23 and 120,641.72

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Solution

The fourth proportional to 217,436.09, 300,064.23 and 120,641.72 is: 166,486.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,436.09 : 300,064.23 = 120,641.72 : x
  2. Step 2: Convert to fraction form
    217,436.09/300,064.23 = 120,641.72/x
  3. Step 3: Cross multiply
    217,436.09x = 300,064.23 × 120,641.72
  4. Step 4: Simplify right side
    217,436.09x = 36,200,263,317.35
  5. Step 5: Solve for x
    x = 36,200,263,317.35/217,436.09
  6. Step 6: Final answer
    x = 166,486.92

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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.