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Finding the Fourth Proportional to 228,790.84, 315,624.56 and 143,954.68

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Solution

The fourth proportional to 228,790.84, 315,624.56 and 143,954.68 is: 198,590.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,790.84 : 315,624.56 = 143,954.68 : x
  2. Step 2: Convert to fraction form
    228,790.84/315,624.56 = 143,954.68/x
  3. Step 3: Cross multiply
    228,790.84x = 315,624.56 × 143,954.68
  4. Step 4: Simplify right side
    228,790.84x = 45,435,632,534.94
  5. Step 5: Solve for x
    x = 45,435,632,534.94/228,790.84
  6. Step 6: Final answer
    x = 198,590.26

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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.