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Finding the Fourth Proportional to 230,668.89, 318,330.93 and 133,865.30

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Solution

The fourth proportional to 230,668.89, 318,330.93 and 133,865.30 is: 184,738.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,668.89 : 318,330.93 = 133,865.30 : x
  2. Step 2: Convert to fraction form
    230,668.89/318,330.93 = 133,865.30/x
  3. Step 3: Cross multiply
    230,668.89x = 318,330.93 × 133,865.30
  4. Step 4: Simplify right side
    230,668.89x = 42,613,463,852.07
  5. Step 5: Solve for x
    x = 42,613,463,852.07/230,668.89
  6. Step 6: Final answer
    x = 184,738.67

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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.