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Finding the Fourth Proportional to 445,788.88, 668,680.94 and 108,831.30

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Solution

The fourth proportional to 445,788.88, 668,680.94 and 108,831.30 is: 163,246.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,788.88 : 668,680.94 = 108,831.30 : x
  2. Step 2: Convert to fraction form
    445,788.88/668,680.94 = 108,831.30/x
  3. Step 3: Cross multiply
    445,788.88x = 668,680.94 × 108,831.30
  4. Step 4: Simplify right side
    445,788.88x = 72,773,415,985.42
  5. Step 5: Solve for x
    x = 72,773,415,985.42/445,788.88
  6. Step 6: Final answer
    x = 163,246.37

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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.