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Finding the Fourth Proportional to 455,597.78, 683,462.02 and 140,081.18

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Solution

The fourth proportional to 455,597.78, 683,462.02 and 140,081.18 is: 210,141.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,597.78 : 683,462.02 = 140,081.18 : x
  2. Step 2: Convert to fraction form
    455,597.78/683,462.02 = 140,081.18/x
  3. Step 3: Cross multiply
    455,597.78x = 683,462.02 × 140,081.18
  4. Step 4: Simplify right side
    455,597.78x = 95,740,166,246.78
  5. Step 5: Solve for x
    x = 95,740,166,246.78/455,597.78
  6. Step 6: Final answer
    x = 210,141.86

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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.