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Finding the Fourth Proportional to 355,699.98, 490,869.78 and 194,551.58

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Solution

The fourth proportional to 355,699.98, 490,869.78 and 194,551.58 is: 268,483.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,699.98 : 490,869.78 = 194,551.58 : x
  2. Step 2: Convert to fraction form
    355,699.98/490,869.78 = 194,551.58/x
  3. Step 3: Cross multiply
    355,699.98x = 490,869.78 × 194,551.58
  4. Step 4: Simplify right side
    355,699.98x = 95,499,492,500.43
  5. Step 5: Solve for x
    x = 95,499,492,500.43/355,699.98
  6. Step 6: Final answer
    x = 268,483.27

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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.