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Finding the Fourth Proportional to 280,361.58, 386,885.46 and 159,491.49

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Solution

The fourth proportional to 280,361.58, 386,885.46 and 159,491.49 is: 220,090.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,361.58 : 386,885.46 = 159,491.49 : x
  2. Step 2: Convert to fraction form
    280,361.58/386,885.46 = 159,491.49/x
  3. Step 3: Cross multiply
    280,361.58x = 386,885.46 × 159,491.49
  4. Step 4: Simplify right side
    280,361.58x = 61,704,938,474.74
  5. Step 5: Solve for x
    x = 61,704,938,474.74/280,361.58
  6. Step 6: Final answer
    x = 220,090.56

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1.5x scale

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.