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Finding the Fourth Proportional to 442,886.20, 664,415.70 and 190,166.20

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Solution

The fourth proportional to 442,886.20, 664,415.70 and 190,166.20 is: 285,286.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,886.20 : 664,415.70 = 190,166.20 : x
  2. Step 2: Convert to fraction form
    442,886.20/664,415.70 = 190,166.20/x
  3. Step 3: Cross multiply
    442,886.20x = 664,415.70 × 190,166.20
  4. Step 4: Simplify right side
    442,886.20x = 126,349,408,889.34
  5. Step 5: Solve for x
    x = 126,349,408,889.34/442,886.20
  6. Step 6: Final answer
    x = 285,286.40

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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.