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Finding the Fourth Proportional to 309,179.70, 426,876.12 and 193,070.07

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Solution

The fourth proportional to 309,179.70, 426,876.12 and 193,070.07 is: 266,566.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,179.70 : 426,876.12 = 193,070.07 : x
  2. Step 2: Convert to fraction form
    309,179.70/426,876.12 = 193,070.07/x
  3. Step 3: Cross multiply
    309,179.70x = 426,876.12 × 193,070.07
  4. Step 4: Simplify right side
    309,179.70x = 82,417,002,369.73
  5. Step 5: Solve for x
    x = 82,417,002,369.73/309,179.70
  6. Step 6: Final answer
    x = 266,566.67

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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.