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Finding the Fourth Proportional to 328,718.01, 493,105.19 and 115,467.39

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Solution

The fourth proportional to 328,718.01, 493,105.19 and 115,467.39 is: 173,210.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,718.01 : 493,105.19 = 115,467.39 : x
  2. Step 2: Convert to fraction form
    328,718.01/493,105.19 = 115,467.39/x
  3. Step 3: Cross multiply
    328,718.01x = 493,105.19 × 115,467.39
  4. Step 4: Simplify right side
    328,718.01x = 56,937,568,707.42
  5. Step 5: Solve for x
    x = 56,937,568,707.42/328,718.01
  6. Step 6: Final answer
    x = 173,210.98

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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.