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Finding the Fourth Proportional to 455,315.99, 682,855.06 and 135,381.72

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Solution

The fourth proportional to 455,315.99, 682,855.06 and 135,381.72 is: 203,037.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,315.99 : 682,855.06 = 135,381.72 : x
  2. Step 2: Convert to fraction form
    455,315.99/682,855.06 = 135,381.72/x
  3. Step 3: Cross multiply
    455,315.99x = 682,855.06 × 135,381.72
  4. Step 4: Simplify right side
    455,315.99x = 92,446,092,533.50
  5. Step 5: Solve for x
    x = 92,446,092,533.50/455,315.99
  6. Step 6: Final answer
    x = 203,037.22

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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.