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Finding the Fourth Proportional to 228,390.86, 315,169.45 and 126,410.24

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Solution

The fourth proportional to 228,390.86, 315,169.45 and 126,410.24 is: 174,440.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,390.86 : 315,169.45 = 126,410.24 : x
  2. Step 2: Convert to fraction form
    228,390.86/315,169.45 = 126,410.24/x
  3. Step 3: Cross multiply
    228,390.86x = 315,169.45 × 126,410.24
  4. Step 4: Simplify right side
    228,390.86x = 39,840,643,923.30
  5. Step 5: Solve for x
    x = 39,840,643,923.30/228,390.86
  6. Step 6: Final answer
    x = 174,440.63

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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.