Home / 253,911.32-381,095.40-135,683.72

Finding the Fourth Proportional to 253,911.32, 381,095.40 and 135,683.72

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Solution

The fourth proportional to 253,911.32, 381,095.40 and 135,683.72 is: 203,647.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,911.32 : 381,095.40 = 135,683.72 : x
  2. Step 2: Convert to fraction form
    253,911.32/381,095.40 = 135,683.72/x
  3. Step 3: Cross multiply
    253,911.32x = 381,095.40 × 135,683.72
  4. Step 4: Simplify right side
    253,911.32x = 51,708,441,546.89
  5. Step 5: Solve for x
    x = 51,708,441,546.89/253,911.32
  6. Step 6: Final answer
    x = 203,647.64

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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.