Home / 228,408.12-315,199.38-126,431.39

Finding the Fourth Proportional to 228,408.12, 315,199.38 and 126,431.39

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Solution

The fourth proportional to 228,408.12, 315,199.38 and 126,431.39 is: 174,473.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,408.12 : 315,199.38 = 126,431.39 : x
  2. Step 2: Convert to fraction form
    228,408.12/315,199.38 = 126,431.39/x
  3. Step 3: Cross multiply
    228,408.12x = 315,199.38 × 126,431.39
  4. Step 4: Simplify right side
    228,408.12x = 39,851,095,740.54
  5. Step 5: Solve for x
    x = 39,851,095,740.54/228,408.12
  6. Step 6: Final answer
    x = 174,473.20

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1.5x scale

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.