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Finding the Fourth Proportional to 204,912.70, 307,369.05 and 169,920.70

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Solution

The fourth proportional to 204,912.70, 307,369.05 and 169,920.70 is: 254,881.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,912.70 : 307,369.05 = 169,920.70 : x
  2. Step 2: Convert to fraction form
    204,912.70/307,369.05 = 169,920.70/x
  3. Step 3: Cross multiply
    204,912.70x = 307,369.05 × 169,920.70
  4. Step 4: Simplify right side
    204,912.70x = 52,228,364,134.34
  5. Step 5: Solve for x
    x = 52,228,364,134.34/204,912.70
  6. Step 6: Final answer
    x = 254,881.05

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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.