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Finding the Fourth Proportional to 275,853.60, 380,708.10 and 168,423.30

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Solution

The fourth proportional to 275,853.60, 380,708.10 and 168,423.30 is: 232,442.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,853.60 : 380,708.10 = 168,423.30 : x
  2. Step 2: Convert to fraction form
    275,853.60/380,708.10 = 168,423.30/x
  3. Step 3: Cross multiply
    275,853.60x = 380,708.10 × 168,423.30
  4. Step 4: Simplify right side
    275,853.60x = 64,120,114,538.73
  5. Step 5: Solve for x
    x = 64,120,114,538.73/275,853.60
  6. Step 6: Final answer
    x = 232,442.55

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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.