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Finding the Fourth Proportional to 436,254.36, 654,396.12 and 120,684.84

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Solution

The fourth proportional to 436,254.36, 654,396.12 and 120,684.84 is: 181,031.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,254.36 : 654,396.12 = 120,684.84 : x
  2. Step 2: Convert to fraction form
    436,254.36/654,396.12 = 120,684.84/x
  3. Step 3: Cross multiply
    436,254.36x = 654,396.12 × 120,684.84
  4. Step 4: Simplify right side
    436,254.36x = 78,975,688,132.27
  5. Step 5: Solve for x
    x = 78,975,688,132.27/436,254.36
  6. Step 6: Final answer
    x = 181,031.29

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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.