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Finding the Fourth Proportional to 308,851.62, 425,995.16 and 188,000.62

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Solution

The fourth proportional to 308,851.62, 425,995.16 and 188,000.62 is: 259,306.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,851.62 : 425,995.16 = 188,000.62 : x
  2. Step 2: Convert to fraction form
    308,851.62/425,995.16 = 188,000.62/x
  3. Step 3: Cross multiply
    308,851.62x = 425,995.16 × 188,000.62
  4. Step 4: Simplify right side
    308,851.62x = 80,087,354,197.00
  5. Step 5: Solve for x
    x = 80,087,354,197.00/308,851.62
  6. Step 6: Final answer
    x = 259,306.89

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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.