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Finding the Fourth Proportional to 269,176.40, 403,618.80 and 111,420.80

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Solution

The fourth proportional to 269,176.40, 403,618.80 and 111,420.80 is: 167,070.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,176.40 : 403,618.80 = 111,420.80 : x
  2. Step 2: Convert to fraction form
    269,176.40/403,618.80 = 111,420.80/x
  3. Step 3: Cross multiply
    269,176.40x = 403,618.80 × 111,420.80
  4. Step 4: Simplify right side
    269,176.40x = 44,971,529,591.04
  5. Step 5: Solve for x
    x = 44,971,529,591.04/269,176.40
  6. Step 6: Final answer
    x = 167,070.85

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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.