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Finding the Fourth Proportional to 228,315.80, 315,091.56 and 126,345.56

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Solution

The fourth proportional to 228,315.80, 315,091.56 and 126,345.56 is: 174,365.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,315.80 : 315,091.56 = 126,345.56 : x
  2. Step 2: Convert to fraction form
    228,315.80/315,091.56 = 126,345.56/x
  3. Step 3: Cross multiply
    228,315.80x = 315,091.56 × 126,345.56
  4. Step 4: Simplify right side
    228,315.80x = 39,810,418,024.02
  5. Step 5: Solve for x
    x = 39,810,418,024.02/228,315.80
  6. Step 6: Final answer
    x = 174,365.59

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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.