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Finding the Fourth Proportional to 392,364.51, 541,425.60 and 220,243.05

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Solution

The fourth proportional to 392,364.51, 541,425.60 and 220,243.05 is: 303,914.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,364.51 : 541,425.60 = 220,243.05 : x
  2. Step 2: Convert to fraction form
    392,364.51/541,425.60 = 220,243.05/x
  3. Step 3: Cross multiply
    392,364.51x = 541,425.60 × 220,243.05
  4. Step 4: Simplify right side
    392,364.51x = 119,245,225,492.08
  5. Step 5: Solve for x
    x = 119,245,225,492.08/392,364.51
  6. Step 6: Final answer
    x = 303,914.40

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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.