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Finding the Fourth Proportional to 354,389.40, 489,039.36 and 193,243.14

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Solution

The fourth proportional to 354,389.40, 489,039.36 and 193,243.14 is: 266,665.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,389.40 : 489,039.36 = 193,243.14 : x
  2. Step 2: Convert to fraction form
    354,389.40/489,039.36 = 193,243.14/x
  3. Step 3: Cross multiply
    354,389.40x = 489,039.36 × 193,243.14
  4. Step 4: Simplify right side
    354,389.40x = 94,503,501,509.99
  5. Step 5: Solve for x
    x = 94,503,501,509.99/354,389.40
  6. Step 6: Final answer
    x = 266,665.71

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1.5x scale

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.