Home / 285,441.12-428,171.40-135,604.08

Finding the Fourth Proportional to 285,441.12, 428,171.40 and 135,604.08

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Solution

The fourth proportional to 285,441.12, 428,171.40 and 135,604.08 is: 203,410.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,441.12 : 428,171.40 = 135,604.08 : x
  2. Step 2: Convert to fraction form
    285,441.12/428,171.40 = 135,604.08/x
  3. Step 3: Cross multiply
    285,441.12x = 428,171.40 × 135,604.08
  4. Step 4: Simplify right side
    285,441.12x = 58,061,788,779.31
  5. Step 5: Solve for x
    x = 58,061,788,779.31/285,441.12
  6. Step 6: Final answer
    x = 203,410.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.