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Finding the Fourth Proportional to 345,558.75, 518,124.28 and 134,949.03

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Solution

The fourth proportional to 345,558.75, 518,124.28 and 134,949.03 is: 202,340.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,558.75 : 518,124.28 = 134,949.03 : x
  2. Step 2: Convert to fraction form
    345,558.75/518,124.28 = 134,949.03/x
  3. Step 3: Cross multiply
    345,558.75x = 518,124.28 × 134,949.03
  4. Step 4: Simplify right side
    345,558.75x = 69,920,369,005.45
  5. Step 5: Solve for x
    x = 69,920,369,005.45/345,558.75
  6. Step 6: Final answer
    x = 202,340.03

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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.