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Finding the Fourth Proportional to 228,344.84, 315,110.88 and 124,978.54

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Solution

The fourth proportional to 228,344.84, 315,110.88 and 124,978.54 is: 172,467.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,344.84 : 315,110.88 = 124,978.54 : x
  2. Step 2: Convert to fraction form
    228,344.84/315,110.88 = 124,978.54/x
  3. Step 3: Cross multiply
    228,344.84x = 315,110.88 × 124,978.54
  4. Step 4: Simplify right side
    228,344.84x = 39,382,097,720.52
  5. Step 5: Solve for x
    x = 39,382,097,720.52/228,344.84
  6. Step 6: Final answer
    x = 172,467.65

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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.