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Finding the Fourth Proportional to 228,578.69, 315,370.36 and 147,878.39

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Solution

The fourth proportional to 228,578.69, 315,370.36 and 147,878.39 is: 204,028.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,578.69 : 315,370.36 = 147,878.39 : x
  2. Step 2: Convert to fraction form
    228,578.69/315,370.36 = 147,878.39/x
  3. Step 3: Cross multiply
    228,578.69x = 315,370.36 × 147,878.39
  4. Step 4: Simplify right side
    228,578.69x = 46,636,462,063.79
  5. Step 5: Solve for x
    x = 46,636,462,063.79/228,578.69
  6. Step 6: Final answer
    x = 204,028.04

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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.