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Finding the Fourth Proportional to 275,457.15, 380,082.87 and 154,603.53

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Solution

The fourth proportional to 275,457.15, 380,082.87 and 154,603.53 is: 213,325.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,457.15 : 380,082.87 = 154,603.53 : x
  2. Step 2: Convert to fraction form
    275,457.15/380,082.87 = 154,603.53/x
  3. Step 3: Cross multiply
    275,457.15x = 380,082.87 × 154,603.53
  4. Step 4: Simplify right side
    275,457.15x = 58,762,153,394.53
  5. Step 5: Solve for x
    x = 58,762,153,394.53/275,457.15
  6. Step 6: Final answer
    x = 213,325.93

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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.