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Finding the Fourth Proportional to 328,318.20, 492,866.10 and 186,276.60

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Solution

The fourth proportional to 328,318.20, 492,866.10 and 186,276.60 is: 279,635.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,318.20 : 492,866.10 = 186,276.60 : x
  2. Step 2: Convert to fraction form
    328,318.20/492,866.10 = 186,276.60/x
  3. Step 3: Cross multiply
    328,318.20x = 492,866.10 × 186,276.60
  4. Step 4: Simplify right side
    328,318.20x = 91,809,421,363.26
  5. Step 5: Solve for x
    x = 91,809,421,363.26/328,318.20
  6. Step 6: Final answer
    x = 279,635.49

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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.