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Finding the Fourth Proportional to 275,502, 380,162.34 and 154,615.56

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Solution

The fourth proportional to 275,502, 380,162.34 and 154,615.56 is: 213,352.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,502 : 380,162.34 = 154,615.56 : x
  2. Step 2: Convert to fraction form
    275,502/380,162.34 = 154,615.56/x
  3. Step 3: Cross multiply
    275,502x = 380,162.34 × 154,615.56
  4. Step 4: Simplify right side
    275,502x = 58,779,013,090.01
  5. Step 5: Solve for x
    x = 58,779,013,090.01/275,502
  6. Step 6: Final answer
    x = 213,352.40

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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.