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Finding the Fourth Proportional to 485,736.45, 670,299.90 and 267,953.84

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Solution

The fourth proportional to 485,736.45, 670,299.90 and 267,953.84 is: 369,767.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,736.45 : 670,299.90 = 267,953.84 : x
  2. Step 2: Convert to fraction form
    485,736.45/670,299.90 = 267,953.84/x
  3. Step 3: Cross multiply
    485,736.45x = 670,299.90 × 267,953.84
  4. Step 4: Simplify right side
    485,736.45x = 179,609,428,805.12
  5. Step 5: Solve for x
    x = 179,609,428,805.12/485,736.45
  6. Step 6: Final answer
    x = 369,767.24

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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.