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Finding the Fourth Proportional to 345,855.60, 518,783.40 and 275,871.60

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Solution

The fourth proportional to 345,855.60, 518,783.40 and 275,871.60 is: 413,807.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,855.60 : 518,783.40 = 275,871.60 : x
  2. Step 2: Convert to fraction form
    345,855.60/518,783.40 = 275,871.60/x
  3. Step 3: Cross multiply
    345,855.60x = 518,783.40 × 275,871.60
  4. Step 4: Simplify right side
    345,855.60x = 143,117,606,611.44
  5. Step 5: Solve for x
    x = 143,117,606,611.44/345,855.60
  6. Step 6: Final answer
    x = 413,807.40

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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.