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Finding the Fourth Proportional to 203,808.40, 305,712.60 and 56,064.40

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Solution

The fourth proportional to 203,808.40, 305,712.60 and 56,064.40 is: 84,096.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,808.40 : 305,712.60 = 56,064.40 : x
  2. Step 2: Convert to fraction form
    203,808.40/305,712.60 = 56,064.40/x
  3. Step 3: Cross multiply
    203,808.40x = 305,712.60 × 56,064.40
  4. Step 4: Simplify right side
    203,808.40x = 17,139,593,491.44
  5. Step 5: Solve for x
    x = 17,139,593,491.44/203,808.40
  6. Step 6: Final answer
    x = 84,096.60

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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.