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Finding the Fourth Proportional to 340,387.31, 509,965.07 and 245,101.61

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Solution

The fourth proportional to 340,387.31, 509,965.07 and 245,101.61 is: 367,208.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,387.31 : 509,965.07 = 245,101.61 : x
  2. Step 2: Convert to fraction form
    340,387.31/509,965.07 = 245,101.61/x
  3. Step 3: Cross multiply
    340,387.31x = 509,965.07 × 245,101.61
  4. Step 4: Simplify right side
    340,387.31x = 124,993,259,750.17
  5. Step 5: Solve for x
    x = 124,993,259,750.17/340,387.31
  6. Step 6: Final answer
    x = 367,208.93

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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.