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Finding the Fourth Proportional to 419,555.52, 579,001.50 and 238,262.40

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Solution

The fourth proportional to 419,555.52, 579,001.50 and 238,262.40 is: 328,810.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,555.52 : 579,001.50 = 238,262.40 : x
  2. Step 2: Convert to fraction form
    419,555.52/579,001.50 = 238,262.40/x
  3. Step 3: Cross multiply
    419,555.52x = 579,001.50 × 238,262.40
  4. Step 4: Simplify right side
    419,555.52x = 137,954,286,993.60
  5. Step 5: Solve for x
    x = 137,954,286,993.60/419,555.52
  6. Step 6: Final answer
    x = 328,810.56

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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.