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Finding the Fourth Proportional to 340,056.40, 509,647.20 and 206,795.20

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Solution

The fourth proportional to 340,056.40, 509,647.20 and 206,795.20 is: 309,926.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,056.40 : 509,647.20 = 206,795.20 : x
  2. Step 2: Convert to fraction form
    340,056.40/509,647.20 = 206,795.20/x
  3. Step 3: Cross multiply
    340,056.40x = 509,647.20 × 206,795.20
  4. Step 4: Simplify right side
    340,056.40x = 105,392,594,653.44
  5. Step 5: Solve for x
    x = 105,392,594,653.44/340,056.40
  6. Step 6: Final answer
    x = 309,926.81

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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.