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Finding the Fourth Proportional to 320,516.14, 480,885.72 and 120,893.80

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Solution

The fourth proportional to 320,516.14, 480,885.72 and 120,893.80 is: 181,382.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,516.14 : 480,885.72 = 120,893.80 : x
  2. Step 2: Convert to fraction form
    320,516.14/480,885.72 = 120,893.80/x
  3. Step 3: Cross multiply
    320,516.14x = 480,885.72 × 120,893.80
  4. Step 4: Simplify right side
    320,516.14x = 58,136,102,056.54
  5. Step 5: Solve for x
    x = 58,136,102,056.54/320,516.14
  6. Step 6: Final answer
    x = 181,382.76

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1.5x scale

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.