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Finding the Fourth Proportional to 275,491.02, 380,148.36 and 154,645.59

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Solution

The fourth proportional to 275,491.02, 380,148.36 and 154,645.59 is: 213,394.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,491.02 : 380,148.36 = 154,645.59 : x
  2. Step 2: Convert to fraction form
    275,491.02/380,148.36 = 154,645.59/x
  3. Step 3: Cross multiply
    275,491.02x = 380,148.36 × 154,645.59
  4. Step 4: Simplify right side
    275,491.02x = 58,788,267,419.73
  5. Step 5: Solve for x
    x = 58,788,267,419.73/275,491.02
  6. Step 6: Final answer
    x = 213,394.50

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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.