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Finding the Fourth Proportional to 331,969.40, 458,117.76 and 188,729.44

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Solution

The fourth proportional to 331,969.40, 458,117.76 and 188,729.44 is: 260,446.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,969.40 : 458,117.76 = 188,729.44 : x
  2. Step 2: Convert to fraction form
    331,969.40/458,117.76 = 188,729.44/x
  3. Step 3: Cross multiply
    331,969.40x = 458,117.76 × 188,729.44
  4. Step 4: Simplify right side
    331,969.40x = 86,460,310,172.81
  5. Step 5: Solve for x
    x = 86,460,310,172.81/331,969.40
  6. Step 6: Final answer
    x = 260,446.63

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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.