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Finding the Fourth Proportional to 485,763.81, 670,354.67 and 267,967.56

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Solution

The fourth proportional to 485,763.81, 670,354.67 and 267,967.56 is: 369,795.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,763.81 : 670,354.67 = 267,967.56 : x
  2. Step 2: Convert to fraction form
    485,763.81/670,354.67 = 267,967.56/x
  3. Step 3: Cross multiply
    485,763.81x = 670,354.67 × 267,967.56
  4. Step 4: Simplify right side
    485,763.81x = 179,633,305,254.51
  5. Step 5: Solve for x
    x = 179,633,305,254.51/485,763.81
  6. Step 6: Final answer
    x = 369,795.57

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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.