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Finding the Fourth Proportional to 355,705.70, 490,885.56 and 194,560.75

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Solution

The fourth proportional to 355,705.70, 490,885.56 and 194,560.75 is: 268,500.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,705.70 : 490,885.56 = 194,560.75 : x
  2. Step 2: Convert to fraction form
    355,705.70/490,885.56 = 194,560.75/x
  3. Step 3: Cross multiply
    355,705.70x = 490,885.56 × 194,560.75
  4. Step 4: Simplify right side
    355,705.70x = 95,507,062,717.77
  5. Step 5: Solve for x
    x = 95,507,062,717.77/355,705.70
  6. Step 6: Final answer
    x = 268,500.23

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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.