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Finding the Fourth Proportional to 392,359.63, 541,418.88 and 220,238.18

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Solution

The fourth proportional to 392,359.63, 541,418.88 and 220,238.18 is: 303,907.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,359.63 : 541,418.88 = 220,238.18 : x
  2. Step 2: Convert to fraction form
    392,359.63/541,418.88 = 220,238.18/x
  3. Step 3: Cross multiply
    392,359.63x = 541,418.88 × 220,238.18
  4. Step 4: Simplify right side
    392,359.63x = 119,241,106,041.74
  5. Step 5: Solve for x
    x = 119,241,106,041.74/392,359.63
  6. Step 6: Final answer
    x = 303,907.68

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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.