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Finding the Fourth Proportional to 392,588.10, 541,730.89 and 220,525.38

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Solution

The fourth proportional to 392,588.10, 541,730.89 and 220,525.38 is: 304,302.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,588.10 : 541,730.89 = 220,525.38 : x
  2. Step 2: Convert to fraction form
    392,588.10/541,730.89 = 220,525.38/x
  3. Step 3: Cross multiply
    392,588.10x = 541,730.89 × 220,525.38
  4. Step 4: Simplify right side
    392,588.10x = 119,465,410,374.99
  5. Step 5: Solve for x
    x = 119,465,410,374.99/392,588.10
  6. Step 6: Final answer
    x = 304,302.17

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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.