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Finding the Fourth Proportional to 485,795.16, 670,365.42 and 267,990.84

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Solution

The fourth proportional to 485,795.16, 670,365.42 and 267,990.84 is: 369,809.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,795.16 : 670,365.42 = 267,990.84 : x
  2. Step 2: Convert to fraction form
    485,795.16/670,365.42 = 267,990.84/x
  3. Step 3: Cross multiply
    485,795.16x = 670,365.42 × 267,990.84
  4. Step 4: Simplify right side
    485,795.16x = 179,651,792,012.75
  5. Step 5: Solve for x
    x = 179,651,792,012.75/485,795.16
  6. Step 6: Final answer
    x = 369,809.76

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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.