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Finding the Fourth Proportional to 275,567.56, 380,262.20 and 154,685.50

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Solution

The fourth proportional to 275,567.56, 380,262.20 and 154,685.50 is: 213,454.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,567.56 : 380,262.20 = 154,685.50 : x
  2. Step 2: Convert to fraction form
    275,567.56/380,262.20 = 154,685.50/x
  3. Step 3: Cross multiply
    275,567.56x = 380,262.20 × 154,685.50
  4. Step 4: Simplify right side
    275,567.56x = 58,821,048,538.10
  5. Step 5: Solve for x
    x = 58,821,048,538.10/275,567.56
  6. Step 6: Final answer
    x = 213,454.18

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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.