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Finding the Fourth Proportional to 485,674.19, 670,213.79 and 267,891.52

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Solution

The fourth proportional to 485,674.19, 670,213.79 and 267,891.52 is: 369,681.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,674.19 : 670,213.79 = 267,891.52 : x
  2. Step 2: Convert to fraction form
    485,674.19/670,213.79 = 267,891.52/x
  3. Step 3: Cross multiply
    485,674.19x = 670,213.79 × 267,891.52
  4. Step 4: Simplify right side
    485,674.19x = 179,544,590,928.06
  5. Step 5: Solve for x
    x = 179,544,590,928.06/485,674.19
  6. Step 6: Final answer
    x = 369,681.15

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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.