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Finding the Fourth Proportional to 429,699.48, 644,616.08 and 130,108.73

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Solution

The fourth proportional to 429,699.48, 644,616.08 and 130,108.73 is: 195,183.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,699.48 : 644,616.08 = 130,108.73 : x
  2. Step 2: Convert to fraction form
    429,699.48/644,616.08 = 130,108.73/x
  3. Step 3: Cross multiply
    429,699.48x = 644,616.08 × 130,108.73
  4. Step 4: Simplify right side
    429,699.48x = 83,870,175,632.75
  5. Step 5: Solve for x
    x = 83,870,175,632.75/429,699.48
  6. Step 6: Final answer
    x = 195,183.33

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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.