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Finding the Fourth Proportional to 485,792.16, 670,361.28 and 267,987.84

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Solution

The fourth proportional to 485,792.16, 670,361.28 and 267,987.84 is: 369,805.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,792.16 : 670,361.28 = 267,987.84 : x
  2. Step 2: Convert to fraction form
    485,792.16/670,361.28 = 267,987.84/x
  3. Step 3: Cross multiply
    485,792.16x = 670,361.28 × 267,987.84
  4. Step 4: Simplify right side
    485,792.16x = 179,648,671,446.84
  5. Step 5: Solve for x
    x = 179,648,671,446.84/485,792.16
  6. Step 6: Final answer
    x = 369,805.62

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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.