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Finding the Fourth Proportional to 455,598.60, 683,786.70 and 203,267.40

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Solution

The fourth proportional to 455,598.60, 683,786.70 and 203,267.40 is: 305,074.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,598.60 : 683,786.70 = 203,267.40 : x
  2. Step 2: Convert to fraction form
    455,598.60/683,786.70 = 203,267.40/x
  3. Step 3: Cross multiply
    455,598.60x = 683,786.70 × 203,267.40
  4. Step 4: Simplify right side
    455,598.60x = 138,991,544,663.58
  5. Step 5: Solve for x
    x = 138,991,544,663.58/455,598.60
  6. Step 6: Final answer
    x = 305,074.56

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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.