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Finding the Fourth Proportional to 228,639.06, 315,453.58 and 147,938.76

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Solution

The fourth proportional to 228,639.06, 315,453.58 and 147,938.76 is: 204,111.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,639.06 : 315,453.58 = 147,938.76 : x
  2. Step 2: Convert to fraction form
    228,639.06/315,453.58 = 147,938.76/x
  3. Step 3: Cross multiply
    228,639.06x = 315,453.58 × 147,938.76
  4. Step 4: Simplify right side
    228,639.06x = 46,667,811,462.76
  5. Step 5: Solve for x
    x = 46,667,811,462.76/228,639.06
  6. Step 6: Final answer
    x = 204,111.28

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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.