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Finding the Fourth Proportional to 289,445.56, 399,229.62 and 180,604.72

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Solution

The fourth proportional to 289,445.56, 399,229.62 and 180,604.72 is: 249,106.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,445.56 : 399,229.62 = 180,604.72 : x
  2. Step 2: Convert to fraction form
    289,445.56/399,229.62 = 180,604.72/x
  3. Step 3: Cross multiply
    289,445.56x = 399,229.62 × 180,604.72
  4. Step 4: Simplify right side
    289,445.56x = 72,102,753,735.81
  5. Step 5: Solve for x
    x = 72,102,753,735.81/289,445.56
  6. Step 6: Final answer
    x = 249,106.44

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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.