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Finding the Fourth Proportional to 275,630.60, 380,346.90 and 154,762.40

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Solution

The fourth proportional to 275,630.60, 380,346.90 and 154,762.40 is: 213,559.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,630.60 : 380,346.90 = 154,762.40 : x
  2. Step 2: Convert to fraction form
    275,630.60/380,346.90 = 154,762.40/x
  3. Step 3: Cross multiply
    275,630.60x = 380,346.90 × 154,762.40
  4. Step 4: Simplify right side
    275,630.60x = 58,863,399,076.56
  5. Step 5: Solve for x
    x = 58,863,399,076.56/275,630.60
  6. Step 6: Final answer
    x = 213,559.01

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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.