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Finding the Fourth Proportional to 201,605.04, 278,209.82 and 109,720.44

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Solution

The fourth proportional to 201,605.04, 278,209.82 and 109,720.44 is: 151,411.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,605.04 : 278,209.82 = 109,720.44 : x
  2. Step 2: Convert to fraction form
    201,605.04/278,209.82 = 109,720.44/x
  3. Step 3: Cross multiply
    201,605.04x = 278,209.82 × 109,720.44
  4. Step 4: Simplify right side
    201,605.04x = 30,525,303,862.72
  5. Step 5: Solve for x
    x = 30,525,303,862.72/201,605.04
  6. Step 6: Final answer
    x = 151,411.41

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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.