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Finding the Fourth Proportional to 307,363.86, 424,183.77 and 171,406.98

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Solution

The fourth proportional to 307,363.86, 424,183.77 and 171,406.98 is: 236,553.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,363.86 : 424,183.77 = 171,406.98 : x
  2. Step 2: Convert to fraction form
    307,363.86/424,183.77 = 171,406.98/x
  3. Step 3: Cross multiply
    307,363.86x = 424,183.77 × 171,406.98
  4. Step 4: Simplify right side
    307,363.86x = 72,708,058,980.71
  5. Step 5: Solve for x
    x = 72,708,058,980.71/307,363.86
  6. Step 6: Final answer
    x = 236,553.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.