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Finding the Fourth Proportional to 203,855.70, 305,783.55 and 201,887.40

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Solution

The fourth proportional to 203,855.70, 305,783.55 and 201,887.40 is: 302,831.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,855.70 : 305,783.55 = 201,887.40 : x
  2. Step 2: Convert to fraction form
    203,855.70/305,783.55 = 201,887.40/x
  3. Step 3: Cross multiply
    203,855.70x = 305,783.55 × 201,887.40
  4. Step 4: Simplify right side
    203,855.70x = 61,733,845,872.27
  5. Step 5: Solve for x
    x = 61,733,845,872.27/203,855.70
  6. Step 6: Final answer
    x = 302,831.10

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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.