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Finding the Fourth Proportional to 275,988.53, 380,895.91 and 153,493.34

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Solution

The fourth proportional to 275,988.53, 380,895.91 and 153,493.34 is: 211,838.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,988.53 : 380,895.91 = 153,493.34 : x
  2. Step 2: Convert to fraction form
    275,988.53/380,895.91 = 153,493.34/x
  3. Step 3: Cross multiply
    275,988.53x = 380,895.91 × 153,493.34
  4. Step 4: Simplify right side
    275,988.53x = 58,464,985,418.24
  5. Step 5: Solve for x
    x = 58,464,985,418.24/275,988.53
  6. Step 6: Final answer
    x = 211,838.46

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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.