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Finding the Fourth Proportional to 217,009.90, 325,612.05 and 98,620.30

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Solution

The fourth proportional to 217,009.90, 325,612.05 and 98,620.30 is: 147,974.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,009.90 : 325,612.05 = 98,620.30 : x
  2. Step 2: Convert to fraction form
    217,009.90/325,612.05 = 98,620.30/x
  3. Step 3: Cross multiply
    217,009.90x = 325,612.05 × 98,620.30
  4. Step 4: Simplify right side
    217,009.90x = 32,111,958,054.62
  5. Step 5: Solve for x
    x = 32,111,958,054.62/217,009.90
  6. Step 6: Final answer
    x = 147,974.62

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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.