Home / 215,988.42-298,069.90-135,408.38

Finding the Fourth Proportional to 215,988.42, 298,069.90 and 135,408.38

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Solution

The fourth proportional to 215,988.42, 298,069.90 and 135,408.38 is: 186,867.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,988.42 : 298,069.90 = 135,408.38 : x
  2. Step 2: Convert to fraction form
    215,988.42/298,069.90 = 135,408.38/x
  3. Step 3: Cross multiply
    215,988.42x = 298,069.90 × 135,408.38
  4. Step 4: Simplify right side
    215,988.42x = 40,361,162,285.76
  5. Step 5: Solve for x
    x = 40,361,162,285.76/215,988.42
  6. Step 6: Final answer
    x = 186,867.25

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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.