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Finding the Fourth Proportional to 455,439.35, 682,289.69 and 255,153.89

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Solution

The fourth proportional to 455,439.35, 682,289.69 and 255,153.89 is: 382,243.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,439.35 : 682,289.69 = 255,153.89 : x
  2. Step 2: Convert to fraction form
    455,439.35/682,289.69 = 255,153.89/x
  3. Step 3: Cross multiply
    455,439.35x = 682,289.69 × 255,153.89
  4. Step 4: Simplify right side
    455,439.35x = 174,088,868,940.35
  5. Step 5: Solve for x
    x = 174,088,868,940.35/455,439.35
  6. Step 6: Final answer
    x = 382,243.80

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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.