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Finding the Fourth Proportional to 355,303.89, 490,318.77 and 194,158.98

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Solution

The fourth proportional to 355,303.89, 490,318.77 and 194,158.98 is: 267,939.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,303.89 : 490,318.77 = 194,158.98 : x
  2. Step 2: Convert to fraction form
    355,303.89/490,318.77 = 194,158.98/x
  3. Step 3: Cross multiply
    355,303.89x = 490,318.77 × 194,158.98
  4. Step 4: Simplify right side
    355,303.89x = 95,199,792,258.05
  5. Step 5: Solve for x
    x = 95,199,792,258.05/355,303.89
  6. Step 6: Final answer
    x = 267,939.07

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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.