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Finding the Fourth Proportional to 325,842.70, 489,201.45 and 208,036.30

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Solution

The fourth proportional to 325,842.70, 489,201.45 and 208,036.30 is: 312,333.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,842.70 : 489,201.45 = 208,036.30 : x
  2. Step 2: Convert to fraction form
    325,842.70/489,201.45 = 208,036.30/x
  3. Step 3: Cross multiply
    325,842.70x = 489,201.45 × 208,036.30
  4. Step 4: Simplify right side
    325,842.70x = 101,771,659,612.64
  5. Step 5: Solve for x
    x = 101,771,659,612.64/325,842.70
  6. Step 6: Final answer
    x = 312,333.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.