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Finding the Fourth Proportional to 228,643.75, 315,527.77 and 126,669.41

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Solution

The fourth proportional to 228,643.75, 315,527.77 and 126,669.41 is: 174,803.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,643.75 : 315,527.77 = 126,669.41 : x
  2. Step 2: Convert to fraction form
    228,643.75/315,527.77 = 126,669.41/x
  3. Step 3: Cross multiply
    228,643.75x = 315,527.77 × 126,669.41
  4. Step 4: Simplify right side
    228,643.75x = 39,967,716,464.52
  5. Step 5: Solve for x
    x = 39,967,716,464.52/228,643.75
  6. Step 6: Final answer
    x = 174,803.45

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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.