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Finding the Fourth Proportional to 275,391.13, 380,038.72 and 154,532.14

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Solution

The fourth proportional to 275,391.13, 380,038.72 and 154,532.14 is: 213,253.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,391.13 : 380,038.72 = 154,532.14 : x
  2. Step 2: Convert to fraction form
    275,391.13/380,038.72 = 154,532.14/x
  3. Step 3: Cross multiply
    275,391.13x = 380,038.72 × 154,532.14
  4. Step 4: Simplify right side
    275,391.13x = 58,728,196,684.46
  5. Step 5: Solve for x
    x = 58,728,196,684.46/275,391.13
  6. Step 6: Final answer
    x = 213,253.77

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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.