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Finding the Fourth Proportional to 228,855.79, 315,839.71 and 126,913.23

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Solution

The fourth proportional to 228,855.79, 315,839.71 and 126,913.23 is: 175,150.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,855.79 : 315,839.71 = 126,913.23 : x
  2. Step 2: Convert to fraction form
    228,855.79/315,839.71 = 126,913.23/x
  3. Step 3: Cross multiply
    228,855.79x = 315,839.71 × 126,913.23
  4. Step 4: Simplify right side
    228,855.79x = 40,084,235,544.60
  5. Step 5: Solve for x
    x = 40,084,235,544.60/228,855.79
  6. Step 6: Final answer
    x = 175,150.63

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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.