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Finding the Fourth Proportional to 228,362.11, 315,128.86 and 124,994.03

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Solution

The fourth proportional to 228,362.11, 315,128.86 and 124,994.03 is: 172,485.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,362.11 : 315,128.86 = 124,994.03 : x
  2. Step 2: Convert to fraction form
    228,362.11/315,128.86 = 124,994.03/x
  3. Step 3: Cross multiply
    228,362.11x = 315,128.86 × 124,994.03
  4. Step 4: Simplify right side
    228,362.11x = 39,389,224,292.58
  5. Step 5: Solve for x
    x = 39,389,224,292.58/228,362.11
  6. Step 6: Final answer
    x = 172,485.82

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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.