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Finding the Fourth Proportional to 269,987.18, 404,740.11 and 127,743.67

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Solution

The fourth proportional to 269,987.18, 404,740.11 and 127,743.67 is: 191,501.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,987.18 : 404,740.11 = 127,743.67 : x
  2. Step 2: Convert to fraction form
    269,987.18/404,740.11 = 127,743.67/x
  3. Step 3: Cross multiply
    269,987.18x = 404,740.11 × 127,743.67
  4. Step 4: Simplify right side
    269,987.18x = 51,702,986,408.89
  5. Step 5: Solve for x
    x = 51,702,986,408.89/269,987.18
  6. Step 6: Final answer
    x = 191,501.64

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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.