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Finding the Fourth Proportional to 269,782.40, 404,673.60 and 143,811.20

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Solution

The fourth proportional to 269,782.40, 404,673.60 and 143,811.20 is: 215,716.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,782.40 : 404,673.60 = 143,811.20 : x
  2. Step 2: Convert to fraction form
    269,782.40/404,673.60 = 143,811.20/x
  3. Step 3: Cross multiply
    269,782.40x = 404,673.60 × 143,811.20
  4. Step 4: Simplify right side
    269,782.40x = 58,196,596,024.32
  5. Step 5: Solve for x
    x = 58,196,596,024.32/269,782.40
  6. Step 6: Final answer
    x = 215,716.80

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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.