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Finding the Fourth Proportional to 419,588.44, 579,011.90 and 238,276.42

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Solution

The fourth proportional to 419,588.44, 579,011.90 and 238,276.42 is: 328,810.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,588.44 : 579,011.90 = 238,276.42 : x
  2. Step 2: Convert to fraction form
    419,588.44/579,011.90 = 238,276.42/x
  3. Step 3: Cross multiply
    419,588.44x = 579,011.90 × 238,276.42
  4. Step 4: Simplify right side
    419,588.44x = 137,964,882,669.40
  5. Step 5: Solve for x
    x = 137,964,882,669.40/419,588.44
  6. Step 6: Final answer
    x = 328,810.02

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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.