Home / 228,715.72-315,629.55-126,742.89

Finding the Fourth Proportional to 228,715.72, 315,629.55 and 126,742.89

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Solution

The fourth proportional to 228,715.72, 315,629.55 and 126,742.89 is: 174,906.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,715.72 : 315,629.55 = 126,742.89 : x
  2. Step 2: Convert to fraction form
    228,715.72/315,629.55 = 126,742.89/x
  3. Step 3: Cross multiply
    228,715.72x = 315,629.55 × 126,742.89
  4. Step 4: Simplify right side
    228,715.72x = 40,003,802,520.01
  5. Step 5: Solve for x
    x = 40,003,802,520.01/228,715.72
  6. Step 6: Final answer
    x = 174,906.22

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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.