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Finding the Fourth Proportional to 404,731.91, 606,992.04 and 120,345.87

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Solution

The fourth proportional to 404,731.91, 606,992.04 and 120,345.87 is: 180,487.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,731.91 : 606,992.04 = 120,345.87 : x
  2. Step 2: Convert to fraction form
    404,731.91/606,992.04 = 120,345.87/x
  3. Step 3: Cross multiply
    404,731.91x = 606,992.04 × 120,345.87
  4. Step 4: Simplify right side
    404,731.91x = 73,048,984,535.15
  5. Step 5: Solve for x
    x = 73,048,984,535.15/404,731.91
  6. Step 6: Final answer
    x = 180,487.34

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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.