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Finding the Fourth Proportional to 354,302, 489,811.56 and 339,430.40

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Solution

The fourth proportional to 354,302, 489,811.56 and 339,430.40 is: 469,252.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,302 : 489,811.56 = 339,430.40 : x
  2. Step 2: Convert to fraction form
    354,302/489,811.56 = 339,430.40/x
  3. Step 3: Cross multiply
    354,302x = 489,811.56 × 339,430.40
  4. Step 4: Simplify right side
    354,302x = 166,256,933,735.42
  5. Step 5: Solve for x
    x = 166,256,933,735.42/354,302
  6. Step 6: Final answer
    x = 469,252.03

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