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Finding the Fourth Proportional to 455,612.40, 683,418.60 and 255,939.30

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Solution

The fourth proportional to 455,612.40, 683,418.60 and 255,939.30 is: 383,908.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,612.40 : 683,418.60 = 255,939.30 : x
  2. Step 2: Convert to fraction form
    455,612.40/683,418.60 = 255,939.30/x
  3. Step 3: Cross multiply
    455,612.40x = 683,418.60 × 255,939.30
  4. Step 4: Simplify right side
    455,612.40x = 174,913,678,090.98
  5. Step 5: Solve for x
    x = 174,913,678,090.98/455,612.40
  6. Step 6: Final answer
    x = 383,908.95

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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.