Home / 228,453.09-315,220.46-143,520.95

Finding the Fourth Proportional to 228,453.09, 315,220.46 and 143,520.95

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Solution

The fourth proportional to 228,453.09, 315,220.46 and 143,520.95 is: 198,030.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,453.09 : 315,220.46 = 143,520.95 : x
  2. Step 2: Convert to fraction form
    228,453.09/315,220.46 = 143,520.95/x
  3. Step 3: Cross multiply
    228,453.09x = 315,220.46 × 143,520.95
  4. Step 4: Simplify right side
    228,453.09x = 45,240,737,584.93
  5. Step 5: Solve for x
    x = 45,240,737,584.93/228,453.09
  6. Step 6: Final answer
    x = 198,030.75

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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.