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Finding the Fourth Proportional to 401,079.70, 601,753.53 and 131,220.19

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Solution

The fourth proportional to 401,079.70, 601,753.53 and 131,220.19 is: 196,874.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,079.70 : 601,753.53 = 131,220.19 : x
  2. Step 2: Convert to fraction form
    401,079.70/601,753.53 = 131,220.19/x
  3. Step 3: Cross multiply
    401,079.70x = 601,753.53 × 131,220.19
  4. Step 4: Simplify right side
    401,079.70x = 78,962,209,531.00
  5. Step 5: Solve for x
    x = 78,962,209,531.00/401,079.70
  6. Step 6: Final answer
    x = 196,874.11

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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.