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Finding the Fourth Proportional to 353,617.22, 488,002.29 and 217,729.56

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Solution

The fourth proportional to 353,617.22, 488,002.29 and 217,729.56 is: 300,473.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,617.22 : 488,002.29 = 217,729.56 : x
  2. Step 2: Convert to fraction form
    353,617.22/488,002.29 = 217,729.56/x
  3. Step 3: Cross multiply
    353,617.22x = 488,002.29 × 217,729.56
  4. Step 4: Simplify right side
    353,617.22x = 106,252,525,645.02
  5. Step 5: Solve for x
    x = 106,252,525,645.02/353,617.22
  6. Step 6: Final answer
    x = 300,473.28

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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.