Home / 253,895.32-381,071.40-135,667.72

Finding the Fourth Proportional to 253,895.32, 381,071.40 and 135,667.72

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Solution

The fourth proportional to 253,895.32, 381,071.40 and 135,667.72 is: 203,623.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,895.32 : 381,071.40 = 135,667.72 : x
  2. Step 2: Convert to fraction form
    253,895.32/381,071.40 = 135,667.72/x
  3. Step 3: Cross multiply
    253,895.32x = 381,071.40 × 135,667.72
  4. Step 4: Simplify right side
    253,895.32x = 51,699,087,995.21
  5. Step 5: Solve for x
    x = 51,699,087,995.21/253,895.32
  6. Step 6: Final answer
    x = 203,623.64

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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.