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Finding the Fourth Proportional to 352,515.76, 486,291.54 and 225,057.40

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Solution

The fourth proportional to 352,515.76, 486,291.54 and 225,057.40 is: 310,464.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,515.76 : 486,291.54 = 225,057.40 : x
  2. Step 2: Convert to fraction form
    352,515.76/486,291.54 = 225,057.40/x
  3. Step 3: Cross multiply
    352,515.76x = 486,291.54 × 225,057.40
  4. Step 4: Simplify right side
    352,515.76x = 109,443,509,634.40
  5. Step 5: Solve for x
    x = 109,443,509,634.40/352,515.76
  6. Step 6: Final answer
    x = 310,464.16

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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.