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Finding the Fourth Proportional to 455,486.78, 683,644.77 and 242,433.56

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Solution

The fourth proportional to 455,486.78, 683,644.77 and 242,433.56 is: 363,871.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,486.78 : 683,644.77 = 242,433.56 : x
  2. Step 2: Convert to fraction form
    455,486.78/683,644.77 = 242,433.56/x
  3. Step 3: Cross multiply
    455,486.78x = 683,644.77 × 242,433.56
  4. Step 4: Simplify right side
    455,486.78x = 165,738,435,366.48
  5. Step 5: Solve for x
    x = 165,738,435,366.48/455,486.78
  6. Step 6: Final answer
    x = 363,871.01

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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.