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Finding the Fourth Proportional to 346,662.88, 477,932.16 and 275,279.20

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Solution

The fourth proportional to 346,662.88, 477,932.16 and 275,279.20 is: 379,517.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,662.88 : 477,932.16 = 275,279.20 : x
  2. Step 2: Convert to fraction form
    346,662.88/477,932.16 = 275,279.20/x
  3. Step 3: Cross multiply
    346,662.88x = 477,932.16 × 275,279.20
  4. Step 4: Simplify right side
    346,662.88x = 131,564,782,659.07
  5. Step 5: Solve for x
    x = 131,564,782,659.07/346,662.88
  6. Step 6: Final answer
    x = 379,517.94

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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.