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Finding the Fourth Proportional to 268,987.20, 403,480.80 and 235,744.80

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Solution

The fourth proportional to 268,987.20, 403,480.80 and 235,744.80 is: 353,617.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,987.20 : 403,480.80 = 235,744.80 : x
  2. Step 2: Convert to fraction form
    268,987.20/403,480.80 = 235,744.80/x
  3. Step 3: Cross multiply
    268,987.20x = 403,480.80 × 235,744.80
  4. Step 4: Simplify right side
    268,987.20x = 95,118,500,499.84
  5. Step 5: Solve for x
    x = 95,118,500,499.84/268,987.20
  6. Step 6: Final answer
    x = 353,617.20

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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.