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Finding the Fourth Proportional to 356,047.94, 491,124.84 and 220,123.46

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Solution

The fourth proportional to 356,047.94, 491,124.84 and 220,123.46 is: 303,633.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,047.94 : 491,124.84 = 220,123.46 : x
  2. Step 2: Convert to fraction form
    356,047.94/491,124.84 = 220,123.46/x
  3. Step 3: Cross multiply
    356,047.94x = 491,124.84 × 220,123.46
  4. Step 4: Simplify right side
    356,047.94x = 108,108,099,072.75
  5. Step 5: Solve for x
    x = 108,108,099,072.75/356,047.94
  6. Step 6: Final answer
    x = 303,633.55

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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.