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Finding the Fourth Proportional to 328,033.60, 492,050.40 and 321,812.80

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Solution

The fourth proportional to 328,033.60, 492,050.40 and 321,812.80 is: 482,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,033.60 : 492,050.40 = 321,812.80 : x
  2. Step 2: Convert to fraction form
    328,033.60/492,050.40 = 321,812.80/x
  3. Step 3: Cross multiply
    328,033.60x = 492,050.40 × 321,812.80
  4. Step 4: Simplify right side
    328,033.60x = 158,348,116,965.12
  5. Step 5: Solve for x
    x = 158,348,116,965.12/328,033.60
  6. Step 6: Final answer
    x = 482,719.20

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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.