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Finding the Fourth Proportional to 431,391.75, 595,315.77 and 235,153.93

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Solution

The fourth proportional to 431,391.75, 595,315.77 and 235,153.93 is: 324,509.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,391.75 : 595,315.77 = 235,153.93 : x
  2. Step 2: Convert to fraction form
    431,391.75/595,315.77 = 235,153.93/x
  3. Step 3: Cross multiply
    431,391.75x = 595,315.77 × 235,153.93
  4. Step 4: Simplify right side
    431,391.75x = 139,990,842,906.48
  5. Step 5: Solve for x
    x = 139,990,842,906.48/431,391.75
  6. Step 6: Final answer
    x = 324,509.78

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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.