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Finding the Fourth Proportional to 228,401.86, 315,186.48 and 126,427.51

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Solution

The fourth proportional to 228,401.86, 315,186.48 and 126,427.51 is: 174,465.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,401.86 : 315,186.48 = 126,427.51 : x
  2. Step 2: Convert to fraction form
    228,401.86/315,186.48 = 126,427.51/x
  3. Step 3: Cross multiply
    228,401.86x = 315,186.48 × 126,427.51
  4. Step 4: Simplify right side
    228,401.86x = 39,848,241,852.06
  5. Step 5: Solve for x
    x = 39,848,241,852.06/228,401.86
  6. Step 6: Final answer
    x = 174,465.49

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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.