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Finding the Fourth Proportional to 485,718.95, 670,292.84 and 267,922.76

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Solution

The fourth proportional to 485,718.95, 670,292.84 and 267,922.76 is: 369,733.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,718.95 : 670,292.84 = 267,922.76 : x
  2. Step 2: Convert to fraction form
    485,718.95/670,292.84 = 267,922.76/x
  3. Step 3: Cross multiply
    485,718.95x = 670,292.84 × 267,922.76
  4. Step 4: Simplify right side
    485,718.95x = 179,586,706,361.43
  5. Step 5: Solve for x
    x = 179,586,706,361.43/485,718.95
  6. Step 6: Final answer
    x = 369,733.79

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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.