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Finding the Fourth Proportional to 485,673.07, 670,212.24 and 267,890.40

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Solution

The fourth proportional to 485,673.07, 670,212.24 and 267,890.40 is: 369,679.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,673.07 : 670,212.24 = 267,890.40 : x
  2. Step 2: Convert to fraction form
    485,673.07/670,212.24 = 267,890.40/x
  3. Step 3: Cross multiply
    485,673.07x = 670,212.24 × 267,890.40
  4. Step 4: Simplify right side
    485,673.07x = 179,543,421,707.44
  5. Step 5: Solve for x
    x = 179,543,421,707.44/485,673.07
  6. Step 6: Final answer
    x = 369,679.59

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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.