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Finding the Fourth Proportional to 369,816.80, 554,401.20 and 251,103.20

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Solution

The fourth proportional to 369,816.80, 554,401.20 and 251,103.20 is: 376,434.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,816.80 : 554,401.20 = 251,103.20 : x
  2. Step 2: Convert to fraction form
    369,816.80/554,401.20 = 251,103.20/x
  3. Step 3: Cross multiply
    369,816.80x = 554,401.20 × 251,103.20
  4. Step 4: Simplify right side
    369,816.80x = 139,211,915,403.84
  5. Step 5: Solve for x
    x = 139,211,915,403.84/369,816.80
  6. Step 6: Final answer
    x = 376,434.81

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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.