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Finding the Fourth Proportional to 328,977.60, 492,591.60 and 210,004.80

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Solution

The fourth proportional to 328,977.60, 492,591.60 and 210,004.80 is: 314,448.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,977.60 : 492,591.60 = 210,004.80 : x
  2. Step 2: Convert to fraction form
    328,977.60/492,591.60 = 210,004.80/x
  3. Step 3: Cross multiply
    328,977.60x = 492,591.60 × 210,004.80
  4. Step 4: Simplify right side
    328,977.60x = 103,446,600,439.68
  5. Step 5: Solve for x
    x = 103,446,600,439.68/328,977.60
  6. Step 6: Final answer
    x = 314,448.77

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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.