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Finding the Fourth Proportional to 381,519, 572,140.26 and 171,048.60

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Solution

The fourth proportional to 381,519, 572,140.26 and 171,048.60 is: 256,510.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,519 : 572,140.26 = 171,048.60 : x
  2. Step 2: Convert to fraction form
    381,519/572,140.26 = 171,048.60/x
  3. Step 3: Cross multiply
    381,519x = 572,140.26 × 171,048.60
  4. Step 4: Simplify right side
    381,519x = 97,863,790,476.64
  5. Step 5: Solve for x
    x = 97,863,790,476.64/381,519
  6. Step 6: Final answer
    x = 256,510.92

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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.