Home / 380,720.76-525,383.27-208,636.67

Finding the Fourth Proportional to 380,720.76, 525,383.27 and 208,636.67

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Solution

The fourth proportional to 380,720.76, 525,383.27 and 208,636.67 is: 287,912.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,720.76 : 525,383.27 = 208,636.67 : x
  2. Step 2: Convert to fraction form
    380,720.76/525,383.27 = 208,636.67/x
  3. Step 3: Cross multiply
    380,720.76x = 525,383.27 × 208,636.67
  4. Step 4: Simplify right side
    380,720.76x = 109,614,213,299.60
  5. Step 5: Solve for x
    x = 109,614,213,299.60/380,720.76
  6. Step 6: Final answer
    x = 287,912.36

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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.