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Finding the Fourth Proportional to 427,081.50, 641,008.62 and 227,570.40

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Solution

The fourth proportional to 427,081.50, 641,008.62 and 227,570.40 is: 341,561.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,081.50 : 641,008.62 = 227,570.40 : x
  2. Step 2: Convert to fraction form
    427,081.50/641,008.62 = 227,570.40/x
  3. Step 3: Cross multiply
    427,081.50x = 641,008.62 × 227,570.40
  4. Step 4: Simplify right side
    427,081.50x = 145,874,588,056.85
  5. Step 5: Solve for x
    x = 145,874,588,056.85/427,081.50
  6. Step 6: Final answer
    x = 341,561.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.