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Finding the Fourth Proportional to 323,416.16, 485,176.08 and 136,455.20

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Solution

The fourth proportional to 323,416.16, 485,176.08 and 136,455.20 is: 204,704.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,416.16 : 485,176.08 = 136,455.20 : x
  2. Step 2: Convert to fraction form
    323,416.16/485,176.08 = 136,455.20/x
  3. Step 3: Cross multiply
    323,416.16x = 485,176.08 × 136,455.20
  4. Step 4: Simplify right side
    323,416.16x = 66,204,799,031.62
  5. Step 5: Solve for x
    x = 66,204,799,031.62/323,416.16
  6. Step 6: Final answer
    x = 204,704.67

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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.