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Finding the Fourth Proportional to 345,494.38, 518,241.60 and 134,984.74

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Solution

The fourth proportional to 345,494.38, 518,241.60 and 134,984.74 is: 202,477.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,494.38 : 518,241.60 = 134,984.74 : x
  2. Step 2: Convert to fraction form
    345,494.38/518,241.60 = 134,984.74/x
  3. Step 3: Cross multiply
    345,494.38x = 518,241.60 × 134,984.74
  4. Step 4: Simplify right side
    345,494.38x = 69,954,707,633.18
  5. Step 5: Solve for x
    x = 69,954,707,633.18/345,494.38
  6. Step 6: Final answer
    x = 202,477.12

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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.