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Finding the Fourth Proportional to 442,912.40, 664,260.60 and 127,336.40

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Solution

The fourth proportional to 442,912.40, 664,260.60 and 127,336.40 is: 190,973.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,912.40 : 664,260.60 = 127,336.40 : x
  2. Step 2: Convert to fraction form
    442,912.40/664,260.60 = 127,336.40/x
  3. Step 3: Cross multiply
    442,912.40x = 664,260.60 × 127,336.40
  4. Step 4: Simplify right side
    442,912.40x = 84,584,553,465.84
  5. Step 5: Solve for x
    x = 84,584,553,465.84/442,912.40
  6. Step 6: Final answer
    x = 190,973.55

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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.