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Finding the Fourth Proportional to 306,440.62, 422,901.70 and 255,367.85

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Solution

The fourth proportional to 306,440.62, 422,901.70 and 255,367.85 is: 352,419.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,440.62 : 422,901.70 = 255,367.85 : x
  2. Step 2: Convert to fraction form
    306,440.62/422,901.70 = 255,367.85/x
  3. Step 3: Cross multiply
    306,440.62x = 422,901.70 × 255,367.85
  4. Step 4: Simplify right side
    306,440.62x = 107,995,495,137.42
  5. Step 5: Solve for x
    x = 107,995,495,137.42/306,440.62
  6. Step 6: Final answer
    x = 352,419.00

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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.