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Finding the Fourth Proportional to 455,939.42, 683,708.18 and 242,655.89

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Solution

The fourth proportional to 455,939.42, 683,708.18 and 242,655.89 is: 363,876.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,939.42 : 683,708.18 = 242,655.89 : x
  2. Step 2: Convert to fraction form
    455,939.42/683,708.18 = 242,655.89/x
  3. Step 3: Cross multiply
    455,939.42x = 683,708.18 × 242,655.89
  4. Step 4: Simplify right side
    455,939.42x = 165,905,812,286.36
  5. Step 5: Solve for x
    x = 165,905,812,286.36/455,939.42
  6. Step 6: Final answer
    x = 363,876.88

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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.