Home / 256,231.14-384,307.20-87,712.80

Finding the Fourth Proportional to 256,231.14, 384,307.20 and 87,712.80

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Solution

The fourth proportional to 256,231.14, 384,307.20 and 87,712.80 is: 131,555.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,231.14 : 384,307.20 = 87,712.80 : x
  2. Step 2: Convert to fraction form
    256,231.14/384,307.20 = 87,712.80/x
  3. Step 3: Cross multiply
    256,231.14x = 384,307.20 × 87,712.80
  4. Step 4: Simplify right side
    256,231.14x = 33,708,660,572.16
  5. Step 5: Solve for x
    x = 33,708,660,572.16/256,231.14
  6. Step 6: Final answer
    x = 131,555.67

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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.