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Finding the Fourth Proportional to 200,009.22, 300,051.20 and 66,890.18

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Solution

The fourth proportional to 200,009.22, 300,051.20 and 66,890.18 is: 100,347.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,009.22 : 300,051.20 = 66,890.18 : x
  2. Step 2: Convert to fraction form
    200,009.22/300,051.20 = 66,890.18/x
  3. Step 3: Cross multiply
    200,009.22x = 300,051.20 × 66,890.18
  4. Step 4: Simplify right side
    200,009.22x = 20,070,478,777.22
  5. Step 5: Solve for x
    x = 20,070,478,777.22/200,009.22
  6. Step 6: Final answer
    x = 100,347.77

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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.