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Finding the Fourth Proportional to 228,357.65, 315,056.75 and 132,785.75

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Solution

The fourth proportional to 228,357.65, 315,056.75 and 132,785.75 is: 183,199.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,357.65 : 315,056.75 = 132,785.75 : x
  2. Step 2: Convert to fraction form
    228,357.65/315,056.75 = 132,785.75/x
  3. Step 3: Cross multiply
    228,357.65x = 315,056.75 × 132,785.75
  4. Step 4: Simplify right side
    228,357.65x = 41,835,046,965.03
  5. Step 5: Solve for x
    x = 41,835,046,965.03/228,357.65
  6. Step 6: Final answer
    x = 183,199.67

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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.