Home / 421,943.10-632,917.29-172,625.10

Finding the Fourth Proportional to 421,943.10, 632,917.29 and 172,625.10

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Solution

The fourth proportional to 421,943.10, 632,917.29 and 172,625.10 is: 258,938.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,943.10 : 632,917.29 = 172,625.10 : x
  2. Step 2: Convert to fraction form
    421,943.10/632,917.29 = 172,625.10/x
  3. Step 3: Cross multiply
    421,943.10x = 632,917.29 × 172,625.10
  4. Step 4: Simplify right side
    421,943.10x = 109,257,410,477.98
  5. Step 5: Solve for x
    x = 109,257,410,477.98/421,943.10
  6. Step 6: Final answer
    x = 258,938.73

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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.