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Finding the Fourth Proportional to 328,389.81, 492,589.58 and 216,784.77

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Solution

The fourth proportional to 328,389.81, 492,589.58 and 216,784.77 is: 325,180.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,389.81 : 492,589.58 = 216,784.77 : x
  2. Step 2: Convert to fraction form
    328,389.81/492,589.58 = 216,784.77/x
  3. Step 3: Cross multiply
    328,389.81x = 492,589.58 × 216,784.77
  4. Step 4: Simplify right side
    328,389.81x = 106,785,918,804.70
  5. Step 5: Solve for x
    x = 106,785,918,804.70/328,389.81
  6. Step 6: Final answer
    x = 325,180.37

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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.