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Finding the Fourth Proportional to 321,172.62, 443,039.64 and 252,938.22

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Solution

The fourth proportional to 321,172.62, 443,039.64 and 252,938.22 is: 348,914.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,172.62 : 443,039.64 = 252,938.22 : x
  2. Step 2: Convert to fraction form
    321,172.62/443,039.64 = 252,938.22/x
  3. Step 3: Cross multiply
    321,172.62x = 443,039.64 × 252,938.22
  4. Step 4: Simplify right side
    321,172.62x = 112,061,657,931.04
  5. Step 5: Solve for x
    x = 112,061,657,931.04/321,172.62
  6. Step 6: Final answer
    x = 348,914.11

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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.