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Finding the Fourth Proportional to 363,722.40, 545,486.40 and 127,040.40

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Solution

The fourth proportional to 363,722.40, 545,486.40 and 127,040.40 is: 190,526.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,722.40 : 545,486.40 = 127,040.40 : x
  2. Step 2: Convert to fraction form
    363,722.40/545,486.40 = 127,040.40/x
  3. Step 3: Cross multiply
    363,722.40x = 545,486.40 × 127,040.40
  4. Step 4: Simplify right side
    363,722.40x = 69,298,810,450.56
  5. Step 5: Solve for x
    x = 69,298,810,450.56/363,722.40
  6. Step 6: Final answer
    x = 190,526.65

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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.