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Finding the Fourth Proportional to 279,464.77, 385,595.80 and 158,578.75

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Solution

The fourth proportional to 279,464.77, 385,595.80 and 158,578.75 is: 218,801.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,464.77 : 385,595.80 = 158,578.75 : x
  2. Step 2: Convert to fraction form
    279,464.77/385,595.80 = 158,578.75/x
  3. Step 3: Cross multiply
    279,464.77x = 385,595.80 × 158,578.75
  4. Step 4: Simplify right side
    279,464.77x = 61,147,299,969.25
  5. Step 5: Solve for x
    x = 61,147,299,969.25/279,464.77
  6. Step 6: Final answer
    x = 218,801.46

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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.