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Finding the Fourth Proportional to 613,648.19, 920,450.42 and 214,287.41

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Solution

The fourth proportional to 613,648.19, 920,450.42 and 214,287.41 is: 321,423.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,648.19 : 920,450.42 = 214,287.41 : x
  2. Step 2: Convert to fraction form
    613,648.19/920,450.42 = 214,287.41/x
  3. Step 3: Cross multiply
    613,648.19x = 920,450.42 × 214,287.41
  4. Step 4: Simplify right side
    613,648.19x = 197,240,938,568.48
  5. Step 5: Solve for x
    x = 197,240,938,568.48/613,648.19
  6. Step 6: Final answer
    x = 321,423.48

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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.