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Finding the Fourth Proportional to 275,633.91, 380,348.33 and 154,747.49

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Solution

The fourth proportional to 275,633.91, 380,348.33 and 154,747.49 is: 213,536.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,633.91 : 380,348.33 = 154,747.49 : x
  2. Step 2: Convert to fraction form
    275,633.91/380,348.33 = 154,747.49/x
  3. Step 3: Cross multiply
    275,633.91x = 380,348.33 × 154,747.49
  4. Step 4: Simplify right side
    275,633.91x = 58,857,946,717.71
  5. Step 5: Solve for x
    x = 58,857,946,717.71/275,633.91
  6. Step 6: Final answer
    x = 213,536.67

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1.5x scale

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.