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Finding the Fourth Proportional to 351,554.06, 485,154.53 and 198,598.70

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Solution

The fourth proportional to 351,554.06, 485,154.53 and 198,598.70 is: 274,071.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,554.06 : 485,154.53 = 198,598.70 : x
  2. Step 2: Convert to fraction form
    351,554.06/485,154.53 = 198,598.70/x
  3. Step 3: Cross multiply
    351,554.06x = 485,154.53 × 198,598.70
  4. Step 4: Simplify right side
    351,554.06x = 96,351,055,538.34
  5. Step 5: Solve for x
    x = 96,351,055,538.34/351,554.06
  6. Step 6: Final answer
    x = 274,071.81

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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.