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Finding the Fourth Proportional to 372,450.40, 513,945.97 and 209,069.47

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Solution

The fourth proportional to 372,450.40, 513,945.97 and 209,069.47 is: 288,495.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,450.40 : 513,945.97 = 209,069.47 : x
  2. Step 2: Convert to fraction form
    372,450.40/513,945.97 = 209,069.47/x
  3. Step 3: Cross multiply
    372,450.40x = 513,945.97 × 209,069.47
  4. Step 4: Simplify right side
    372,450.40x = 107,450,409,749.00
  5. Step 5: Solve for x
    x = 107,450,409,749.00/372,450.40
  6. Step 6: Final answer
    x = 288,495.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.