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Finding the Fourth Proportional to 279,464.56, 385,638.94 and 158,605.84

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Solution

The fourth proportional to 279,464.56, 385,638.94 and 158,605.84 is: 218,863.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,464.56 : 385,638.94 = 158,605.84 : x
  2. Step 2: Convert to fraction form
    279,464.56/385,638.94 = 158,605.84/x
  3. Step 3: Cross multiply
    279,464.56x = 385,638.94 × 158,605.84
  4. Step 4: Simplify right side
    279,464.56x = 61,164,588,015.41
  5. Step 5: Solve for x
    x = 61,164,588,015.41/279,464.56
  6. Step 6: Final answer
    x = 218,863.49

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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.