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Finding the Fourth Proportional to 369,954, 555,018.48 and 120,636

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Solution

The fourth proportional to 369,954, 555,018.48 and 120,636 is: 180,982.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,954 : 555,018.48 = 120,636 : x
  2. Step 2: Convert to fraction form
    369,954/555,018.48 = 120,636/x
  3. Step 3: Cross multiply
    369,954x = 555,018.48 × 120,636
  4. Step 4: Simplify right side
    369,954x = 66,955,209,353.28
  5. Step 5: Solve for x
    x = 66,955,209,353.28/369,954
  6. Step 6: Final answer
    x = 180,982.53

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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.