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Finding the Fourth Proportional to 455,494.78, 683,656.70 and 242,441.50

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Solution

The fourth proportional to 455,494.78, 683,656.70 and 242,441.50 is: 363,882.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,494.78 : 683,656.70 = 242,441.50 : x
  2. Step 2: Convert to fraction form
    455,494.78/683,656.70 = 242,441.50/x
  3. Step 3: Cross multiply
    455,494.78x = 683,656.70 × 242,441.50
  4. Step 4: Simplify right side
    455,494.78x = 165,746,755,833.05
  5. Step 5: Solve for x
    x = 165,746,755,833.05/455,494.78
  6. Step 6: Final answer
    x = 363,882.89

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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.