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Finding the Fourth Proportional to 321,673.04, 443,907.16 and 178,431.60

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Solution

The fourth proportional to 321,673.04, 443,907.16 and 178,431.60 is: 246,234.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,673.04 : 443,907.16 = 178,431.60 : x
  2. Step 2: Convert to fraction form
    321,673.04/443,907.16 = 178,431.60/x
  3. Step 3: Cross multiply
    321,673.04x = 443,907.16 × 178,431.60
  4. Step 4: Simplify right side
    321,673.04x = 79,207,064,810.26
  5. Step 5: Solve for x
    x = 79,207,064,810.26/321,673.04
  6. Step 6: Final answer
    x = 246,234.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.