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Finding the Fourth Proportional to 228,002.45, 342,003.68 and 85,847.45

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Solution

The fourth proportional to 228,002.45, 342,003.68 and 85,847.45 is: 128,771.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,002.45 : 342,003.68 = 85,847.45 : x
  2. Step 2: Convert to fraction form
    228,002.45/342,003.68 = 85,847.45/x
  3. Step 3: Cross multiply
    228,002.45x = 342,003.68 × 85,847.45
  4. Step 4: Simplify right side
    228,002.45x = 29,360,143,818.62
  5. Step 5: Solve for x
    x = 29,360,143,818.62/228,002.45
  6. Step 6: Final answer
    x = 128,771.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.