Home / 340,839.40-511,259.10-191,540.20

Finding the Fourth Proportional to 340,839.40, 511,259.10 and 191,540.20

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Solution

The fourth proportional to 340,839.40, 511,259.10 and 191,540.20 is: 287,310.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,839.40 : 511,259.10 = 191,540.20 : x
  2. Step 2: Convert to fraction form
    340,839.40/511,259.10 = 191,540.20/x
  3. Step 3: Cross multiply
    340,839.40x = 511,259.10 × 191,540.20
  4. Step 4: Simplify right side
    340,839.40x = 97,926,670,265.82
  5. Step 5: Solve for x
    x = 97,926,670,265.82/340,839.40
  6. Step 6: Final answer
    x = 287,310.30

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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.