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Finding the Fourth Proportional to 308,098.26, 461,949.54 and 128,308.32

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Solution

The fourth proportional to 308,098.26, 461,949.54 and 128,308.32 is: 192,380.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,098.26 : 461,949.54 = 128,308.32 : x
  2. Step 2: Convert to fraction form
    308,098.26/461,949.54 = 128,308.32/x
  3. Step 3: Cross multiply
    308,098.26x = 461,949.54 × 128,308.32
  4. Step 4: Simplify right side
    308,098.26x = 59,271,969,402.17
  5. Step 5: Solve for x
    x = 59,271,969,402.17/308,098.26
  6. Step 6: Final answer
    x = 192,380.08

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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.