Home / 380,556.12-525,144.92-208,439.76

Finding the Fourth Proportional to 380,556.12, 525,144.92 and 208,439.76

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Solution

The fourth proportional to 380,556.12, 525,144.92 and 208,439.76 is: 287,634.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,556.12 : 525,144.92 = 208,439.76 : x
  2. Step 2: Convert to fraction form
    380,556.12/525,144.92 = 208,439.76/x
  3. Step 3: Cross multiply
    380,556.12x = 525,144.92 × 208,439.76
  4. Step 4: Simplify right side
    380,556.12x = 109,461,080,047.82
  5. Step 5: Solve for x
    x = 109,461,080,047.82/380,556.12
  6. Step 6: Final answer
    x = 287,634.53

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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.