Home / 411,823.70-618,135.03-198,741.58

Finding the Fourth Proportional to 411,823.70, 618,135.03 and 198,741.58

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Solution

The fourth proportional to 411,823.70, 618,135.03 and 198,741.58 is: 298,305.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,823.70 : 618,135.03 = 198,741.58 : x
  2. Step 2: Convert to fraction form
    411,823.70/618,135.03 = 198,741.58/x
  3. Step 3: Cross multiply
    411,823.70x = 618,135.03 × 198,741.58
  4. Step 4: Simplify right side
    411,823.70x = 122,849,133,012.40
  5. Step 5: Solve for x
    x = 122,849,133,012.40/411,823.70
  6. Step 6: Final answer
    x = 298,305.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.