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Finding the Fourth Proportional to 369,940.40, 554,910.60 and 120,622.40

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Solution

The fourth proportional to 369,940.40, 554,910.60 and 120,622.40 is: 180,933.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,940.40 : 554,910.60 = 120,622.40 : x
  2. Step 2: Convert to fraction form
    369,940.40/554,910.60 = 120,622.40/x
  3. Step 3: Cross multiply
    369,940.40x = 554,910.60 × 120,622.40
  4. Step 4: Simplify right side
    369,940.40x = 66,934,648,357.44
  5. Step 5: Solve for x
    x = 66,934,648,357.44/369,940.40
  6. Step 6: Final answer
    x = 180,933.60

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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.