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Finding the Fourth Proportional to 399,276.60, 598,914.90 and 273,305.40

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Solution

The fourth proportional to 399,276.60, 598,914.90 and 273,305.40 is: 409,958.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,276.60 : 598,914.90 = 273,305.40 : x
  2. Step 2: Convert to fraction form
    399,276.60/598,914.90 = 273,305.40/x
  3. Step 3: Cross multiply
    399,276.60x = 598,914.90 × 273,305.40
  4. Step 4: Simplify right side
    399,276.60x = 163,686,676,310.46
  5. Step 5: Solve for x
    x = 163,686,676,310.46/399,276.60
  6. Step 6: Final answer
    x = 409,958.10

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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.