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Finding the Fourth Proportional to 345,718.06, 518,238.01 and 165,752.39

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Solution

The fourth proportional to 345,718.06, 518,238.01 and 165,752.39 is: 248,466.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,718.06 : 518,238.01 = 165,752.39 : x
  2. Step 2: Convert to fraction form
    345,718.06/518,238.01 = 165,752.39/x
  3. Step 3: Cross multiply
    345,718.06x = 518,238.01 × 165,752.39
  4. Step 4: Simplify right side
    345,718.06x = 85,899,188,295.90
  5. Step 5: Solve for x
    x = 85,899,188,295.90/345,718.06
  6. Step 6: Final answer
    x = 248,466.02

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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.