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Finding the Fourth Proportional to 228,638.06, 315,452.20 and 147,937.76

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Solution

The fourth proportional to 228,638.06, 315,452.20 and 147,937.76 is: 204,109.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,638.06 : 315,452.20 = 147,937.76 : x
  2. Step 2: Convert to fraction form
    228,638.06/315,452.20 = 147,937.76/x
  3. Step 3: Cross multiply
    228,638.06x = 315,452.20 × 147,937.76
  4. Step 4: Simplify right side
    228,638.06x = 46,667,291,855.07
  5. Step 5: Solve for x
    x = 46,667,291,855.07/228,638.06
  6. Step 6: Final answer
    x = 204,109.90

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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.