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Finding the Fourth Proportional to 321,998.40, 482,608.80 and 164,145.60

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Solution

The fourth proportional to 321,998.40, 482,608.80 and 164,145.60 is: 246,020.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,998.40 : 482,608.80 = 164,145.60 : x
  2. Step 2: Convert to fraction form
    321,998.40/482,608.80 = 164,145.60/x
  3. Step 3: Cross multiply
    321,998.40x = 482,608.80 × 164,145.60
  4. Step 4: Simplify right side
    321,998.40x = 79,218,111,041.28
  5. Step 5: Solve for x
    x = 79,218,111,041.28/321,998.40
  6. Step 6: Final answer
    x = 246,020.20

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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.