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Finding the Fourth Proportional to 399,203.40, 597,930.30 and 354,880.20

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Solution

The fourth proportional to 399,203.40, 597,930.30 and 354,880.20 is: 531,542.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,203.40 : 597,930.30 = 354,880.20 : x
  2. Step 2: Convert to fraction form
    399,203.40/597,930.30 = 354,880.20/x
  3. Step 3: Cross multiply
    399,203.40x = 597,930.30 × 354,880.20
  4. Step 4: Simplify right side
    399,203.40x = 212,193,624,450.06
  5. Step 5: Solve for x
    x = 212,193,624,450.06/399,203.40
  6. Step 6: Final answer
    x = 531,542.63

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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.