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Finding the Fourth Proportional to 363,905.80, 545,858.70 and 340,286.20

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Solution

The fourth proportional to 363,905.80, 545,858.70 and 340,286.20 is: 510,429.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,905.80 : 545,858.70 = 340,286.20 : x
  2. Step 2: Convert to fraction form
    363,905.80/545,858.70 = 340,286.20/x
  3. Step 3: Cross multiply
    363,905.80x = 545,858.70 × 340,286.20
  4. Step 4: Simplify right side
    363,905.80x = 185,748,182,759.94
  5. Step 5: Solve for x
    x = 185,748,182,759.94/363,905.80
  6. Step 6: Final answer
    x = 510,429.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.