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Finding the Fourth Proportional to 308,841.06, 422,308.95 and 308,841.06

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Solution

The fourth proportional to 308,841.06, 422,308.95 and 308,841.06 is: 422,308.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,841.06 : 422,308.95 = 308,841.06 : x
  2. Step 2: Convert to fraction form
    308,841.06/422,308.95 = 308,841.06/x
  3. Step 3: Cross multiply
    308,841.06x = 422,308.95 × 308,841.06
  4. Step 4: Simplify right side
    308,841.06x = 130,426,343,765.49
  5. Step 5: Solve for x
    x = 130,426,343,765.49/308,841.06
  6. Step 6: Final answer
    x = 422,308.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.