Home / 380,371.20-524,783.04-219,221.12

Finding the Fourth Proportional to 380,371.20, 524,783.04 and 219,221.12

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Solution

The fourth proportional to 380,371.20, 524,783.04 and 219,221.12 is: 302,450.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,371.20 : 524,783.04 = 219,221.12 : x
  2. Step 2: Convert to fraction form
    380,371.20/524,783.04 = 219,221.12/x
  3. Step 3: Cross multiply
    380,371.20x = 524,783.04 × 219,221.12
  4. Step 4: Simplify right side
    380,371.20x = 115,043,525,785.81
  5. Step 5: Solve for x
    x = 115,043,525,785.81/380,371.20
  6. Step 6: Final answer
    x = 302,450.67

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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.