Home / 215,286.81-297,064.19-129,227.55

Finding the Fourth Proportional to 215,286.81, 297,064.19 and 129,227.55

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Solution

The fourth proportional to 215,286.81, 297,064.19 and 129,227.55 is: 178,315.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,286.81 : 297,064.19 = 129,227.55 : x
  2. Step 2: Convert to fraction form
    215,286.81/297,064.19 = 129,227.55/x
  3. Step 3: Cross multiply
    215,286.81x = 297,064.19 × 129,227.55
  4. Step 4: Simplify right side
    215,286.81x = 38,388,877,466.43
  5. Step 5: Solve for x
    x = 38,388,877,466.43/215,286.81
  6. Step 6: Final answer
    x = 178,315.05

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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.