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Finding the Fourth Proportional to 345,867.60, 518,817.60 and 109,228.80

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Solution

The fourth proportional to 345,867.60, 518,817.60 and 109,228.80 is: 163,848.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,867.60 : 518,817.60 = 109,228.80 : x
  2. Step 2: Convert to fraction form
    345,867.60/518,817.60 = 109,228.80/x
  3. Step 3: Cross multiply
    345,867.60x = 518,817.60 × 109,228.80
  4. Step 4: Simplify right side
    345,867.60x = 56,669,823,866.88
  5. Step 5: Solve for x
    x = 56,669,823,866.88/345,867.60
  6. Step 6: Final answer
    x = 163,848.32

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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.