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Finding the Fourth Proportional to 354,573.98, 489,311.38 and 193,428.97

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Solution

The fourth proportional to 354,573.98, 489,311.38 and 193,428.97 is: 266,931.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,573.98 : 489,311.38 = 193,428.97 : x
  2. Step 2: Convert to fraction form
    354,573.98/489,311.38 = 193,428.97/x
  3. Step 3: Cross multiply
    354,573.98x = 489,311.38 × 193,428.97
  4. Step 4: Simplify right side
    354,573.98x = 94,646,996,242.68
  5. Step 5: Solve for x
    x = 94,646,996,242.68/354,573.98
  6. Step 6: Final answer
    x = 266,931.59

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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.