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Finding the Fourth Proportional to 383,401.73, 529,087.30 and 208,973.45

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Solution

The fourth proportional to 383,401.73, 529,087.30 and 208,973.45 is: 288,379.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,401.73 : 529,087.30 = 208,973.45 : x
  2. Step 2: Convert to fraction form
    383,401.73/529,087.30 = 208,973.45/x
  3. Step 3: Cross multiply
    383,401.73x = 529,087.30 × 208,973.45
  4. Step 4: Simplify right side
    383,401.73x = 110,565,199,232.47
  5. Step 5: Solve for x
    x = 110,565,199,232.47/383,401.73
  6. Step 6: Final answer
    x = 288,379.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.