Home / 403,334.20-605,438.70-253,743.40

Finding the Fourth Proportional to 403,334.20, 605,438.70 and 253,743.40

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Solution

The fourth proportional to 403,334.20, 605,438.70 and 253,743.40 is: 380,890.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,334.20 : 605,438.70 = 253,743.40 : x
  2. Step 2: Convert to fraction form
    403,334.20/605,438.70 = 253,743.40/x
  3. Step 3: Cross multiply
    403,334.20x = 605,438.70 × 253,743.40
  4. Step 4: Simplify right side
    403,334.20x = 153,626,074,229.58
  5. Step 5: Solve for x
    x = 153,626,074,229.58/403,334.20
  6. Step 6: Final answer
    x = 380,890.27

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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.