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Finding the Fourth Proportional to 228,628.85, 315,501.95 and 125,262.32

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Solution

The fourth proportional to 228,628.85, 315,501.95 and 125,262.32 is: 172,858.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,628.85 : 315,501.95 = 125,262.32 : x
  2. Step 2: Convert to fraction form
    228,628.85/315,501.95 = 125,262.32/x
  3. Step 3: Cross multiply
    228,628.85x = 315,501.95 × 125,262.32
  4. Step 4: Simplify right side
    228,628.85x = 39,520,504,957.17
  5. Step 5: Solve for x
    x = 39,520,504,957.17/228,628.85
  6. Step 6: Final answer
    x = 172,858.79

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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.