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Finding the Fourth Proportional to 297,391.71, 446,088.21 and 209,040.57

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Solution

The fourth proportional to 297,391.71, 446,088.21 and 209,040.57 is: 313,561.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,391.71 : 446,088.21 = 209,040.57 : x
  2. Step 2: Convert to fraction form
    297,391.71/446,088.21 = 209,040.57/x
  3. Step 3: Cross multiply
    297,391.71x = 446,088.21 × 209,040.57
  4. Step 4: Simplify right side
    297,391.71x = 93,250,533,688.68
  5. Step 5: Solve for x
    x = 93,250,533,688.68/297,391.71
  6. Step 6: Final answer
    x = 313,561.31

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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.