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Finding the Fourth Proportional to 455,718.20, 683,609.70 and 140,174.60

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Solution

The fourth proportional to 455,718.20, 683,609.70 and 140,174.60 is: 210,271.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,718.20 : 683,609.70 = 140,174.60 : x
  2. Step 2: Convert to fraction form
    455,718.20/683,609.70 = 140,174.60/x
  3. Step 3: Cross multiply
    455,718.20x = 683,609.70 × 140,174.60
  4. Step 4: Simplify right side
    455,718.20x = 95,824,716,253.62
  5. Step 5: Solve for x
    x = 95,824,716,253.62/455,718.20
  6. Step 6: Final answer
    x = 210,271.87

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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.