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Finding the Fourth Proportional to 275,302.69, 379,881.35 and 154,439.35

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Solution

The fourth proportional to 275,302.69, 379,881.35 and 154,439.35 is: 213,105.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,302.69 : 379,881.35 = 154,439.35 : x
  2. Step 2: Convert to fraction form
    275,302.69/379,881.35 = 154,439.35/x
  3. Step 3: Cross multiply
    275,302.69x = 379,881.35 × 154,439.35
  4. Step 4: Simplify right side
    275,302.69x = 58,668,626,099.52
  5. Step 5: Solve for x
    x = 58,668,626,099.52/275,302.69
  6. Step 6: Final answer
    x = 213,105.90

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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.