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Finding the Fourth Proportional to 323,830.80, 485,389.80 and 113,360.40

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Solution

The fourth proportional to 323,830.80, 485,389.80 and 113,360.40 is: 169,915.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,830.80 : 485,389.80 = 113,360.40 : x
  2. Step 2: Convert to fraction form
    323,830.80/485,389.80 = 113,360.40/x
  3. Step 3: Cross multiply
    323,830.80x = 485,389.80 × 113,360.40
  4. Step 4: Simplify right side
    323,830.80x = 55,023,981,883.92
  5. Step 5: Solve for x
    x = 55,023,981,883.92/323,830.80
  6. Step 6: Final answer
    x = 169,915.84

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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.