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Finding the Fourth Proportional to 455,904.40, 683,856.60 and 203,305.90

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Solution

The fourth proportional to 455,904.40, 683,856.60 and 203,305.90 is: 304,958.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,904.40 : 683,856.60 = 203,305.90 : x
  2. Step 2: Convert to fraction form
    455,904.40/683,856.60 = 203,305.90/x
  3. Step 3: Cross multiply
    455,904.40x = 683,856.60 × 203,305.90
  4. Step 4: Simplify right side
    455,904.40x = 139,032,081,533.94
  5. Step 5: Solve for x
    x = 139,032,081,533.94/455,904.40
  6. Step 6: Final answer
    x = 304,958.85

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Similar ratio
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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.