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Finding the Fourth Proportional to 455,536.28, 683,369.76 and 140,019.68

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Solution

The fourth proportional to 455,536.28, 683,369.76 and 140,019.68 is: 210,049.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,536.28 : 683,369.76 = 140,019.68 : x
  2. Step 2: Convert to fraction form
    455,536.28/683,369.76 = 140,019.68/x
  3. Step 3: Cross multiply
    455,536.28x = 683,369.76 × 140,019.68
  4. Step 4: Simplify right side
    455,536.28x = 95,685,215,116.88
  5. Step 5: Solve for x
    x = 95,685,215,116.88/455,536.28
  6. Step 6: Final answer
    x = 210,049.60

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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.