Home / 215,428.18-323,289.88-75,186.80

Finding the Fourth Proportional to 215,428.18, 323,289.88 and 75,186.80

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Solution

The fourth proportional to 215,428.18, 323,289.88 and 75,186.80 is: 112,831.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,428.18 : 323,289.88 = 75,186.80 : x
  2. Step 2: Convert to fraction form
    215,428.18/323,289.88 = 75,186.80/x
  3. Step 3: Cross multiply
    215,428.18x = 323,289.88 × 75,186.80
  4. Step 4: Simplify right side
    215,428.18x = 24,307,132,169.84
  5. Step 5: Solve for x
    x = 24,307,132,169.84/215,428.18
  6. Step 6: Final answer
    x = 112,831.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.