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Finding the Fourth Proportional to 490,912.40, 736,757.40 and 191,536.40

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Solution

The fourth proportional to 490,912.40, 736,757.40 and 191,536.40 is: 287,456.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,912.40 : 736,757.40 = 191,536.40 : x
  2. Step 2: Convert to fraction form
    490,912.40/736,757.40 = 191,536.40/x
  3. Step 3: Cross multiply
    490,912.40x = 736,757.40 × 191,536.40
  4. Step 4: Simplify right side
    490,912.40x = 141,115,860,069.36
  5. Step 5: Solve for x
    x = 141,115,860,069.36/490,912.40
  6. Step 6: Final answer
    x = 287,456.30

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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.