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Finding the Fourth Proportional to 455,597.60, 683,785.20 and 203,266.40

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Solution

The fourth proportional to 455,597.60, 683,785.20 and 203,266.40 is: 305,073.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,597.60 : 683,785.20 = 203,266.40 : x
  2. Step 2: Convert to fraction form
    455,597.60/683,785.20 = 203,266.40/x
  3. Step 3: Cross multiply
    455,597.60x = 683,785.20 × 203,266.40
  4. Step 4: Simplify right side
    455,597.60x = 138,990,555,977.28
  5. Step 5: Solve for x
    x = 138,990,555,977.28/455,597.60
  6. Step 6: Final answer
    x = 305,073.06

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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.