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Finding the Fourth Proportional to 275,821.50, 380,638.71 and 153,325.38

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Solution

The fourth proportional to 275,821.50, 380,638.71 and 153,325.38 is: 211,591.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,821.50 : 380,638.71 = 153,325.38 : x
  2. Step 2: Convert to fraction form
    275,821.50/380,638.71 = 153,325.38/x
  3. Step 3: Cross multiply
    275,821.50x = 380,638.71 × 153,325.38
  4. Step 4: Simplify right side
    275,821.50x = 58,361,574,853.46
  5. Step 5: Solve for x
    x = 58,361,574,853.46/275,821.50
  6. Step 6: Final answer
    x = 211,591.83

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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.