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Finding the Fourth Proportional to 352,525.88, 486,015.90 and 280,170.36

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Solution

The fourth proportional to 352,525.88, 486,015.90 and 280,170.36 is: 386,261.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,525.88 : 486,015.90 = 280,170.36 : x
  2. Step 2: Convert to fraction form
    352,525.88/486,015.90 = 280,170.36/x
  3. Step 3: Cross multiply
    352,525.88x = 486,015.90 × 280,170.36
  4. Step 4: Simplify right side
    352,525.88x = 136,167,249,668.72
  5. Step 5: Solve for x
    x = 136,167,249,668.72/352,525.88
  6. Step 6: Final answer
    x = 386,261.72

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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.