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Finding the Fourth Proportional to 328,522.80, 492,784.20 and 216,329.70

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Solution

The fourth proportional to 328,522.80, 492,784.20 and 216,329.70 is: 324,494.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,522.80 : 492,784.20 = 216,329.70 : x
  2. Step 2: Convert to fraction form
    328,522.80/492,784.20 = 216,329.70/x
  3. Step 3: Cross multiply
    328,522.80x = 492,784.20 × 216,329.70
  4. Step 4: Simplify right side
    328,522.80x = 106,603,858,150.74
  5. Step 5: Solve for x
    x = 106,603,858,150.74/328,522.80
  6. Step 6: Final answer
    x = 324,494.55

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1.5x scale

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.