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Finding the Fourth Proportional to 352,213.98, 485,689.86 and 301,394.88

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Solution

The fourth proportional to 352,213.98, 485,689.86 and 301,394.88 is: 415,612.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,213.98 : 485,689.86 = 301,394.88 : x
  2. Step 2: Convert to fraction form
    352,213.98/485,689.86 = 301,394.88/x
  3. Step 3: Cross multiply
    352,213.98x = 485,689.86 × 301,394.88
  4. Step 4: Simplify right side
    352,213.98x = 146,384,437,071.92
  5. Step 5: Solve for x
    x = 146,384,437,071.92/352,213.98
  6. Step 6: Final answer
    x = 415,612.23

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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.