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Finding the Fourth Proportional to 269,837.40, 404,756.10 and 145,421.40

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Solution

The fourth proportional to 269,837.40, 404,756.10 and 145,421.40 is: 218,132.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,837.40 : 404,756.10 = 145,421.40 : x
  2. Step 2: Convert to fraction form
    269,837.40/404,756.10 = 145,421.40/x
  3. Step 3: Cross multiply
    269,837.40x = 404,756.10 × 145,421.40
  4. Step 4: Simplify right side
    269,837.40x = 58,860,198,720.54
  5. Step 5: Solve for x
    x = 58,860,198,720.54/269,837.40
  6. Step 6: Final answer
    x = 218,132.10

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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.