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Finding the Fourth Proportional to 275,985.53, 380,891.77 and 153,490.34

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Solution

The fourth proportional to 275,985.53, 380,891.77 and 153,490.34 is: 211,834.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,985.53 : 380,891.77 = 153,490.34 : x
  2. Step 2: Convert to fraction form
    275,985.53/380,891.77 = 153,490.34/x
  3. Step 3: Cross multiply
    275,985.53x = 380,891.77 × 153,490.34
  4. Step 4: Simplify right side
    275,985.53x = 58,463,207,849.01
  5. Step 5: Solve for x
    x = 58,463,207,849.01/275,985.53
  6. Step 6: Final answer
    x = 211,834.32

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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.