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Finding the Fourth Proportional to 399,330.81, 550,996.23 and 254,195.01

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Solution

The fourth proportional to 399,330.81, 550,996.23 and 254,195.01 is: 350,738.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,330.81 : 550,996.23 = 254,195.01 : x
  2. Step 2: Convert to fraction form
    399,330.81/550,996.23 = 254,195.01/x
  3. Step 3: Cross multiply
    399,330.81x = 550,996.23 × 254,195.01
  4. Step 4: Simplify right side
    399,330.81x = 140,060,492,194.81
  5. Step 5: Solve for x
    x = 140,060,492,194.81/399,330.81
  6. Step 6: Final answer
    x = 350,738.01

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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.