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Finding the Fourth Proportional to 387,192.96, 580,683.60 and 117,350.64

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Solution

The fourth proportional to 387,192.96, 580,683.60 and 117,350.64 is: 175,993.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,192.96 : 580,683.60 = 117,350.64 : x
  2. Step 2: Convert to fraction form
    387,192.96/580,683.60 = 117,350.64/x
  3. Step 3: Cross multiply
    387,192.96x = 580,683.60 × 117,350.64
  4. Step 4: Simplify right side
    387,192.96x = 68,143,592,097.50
  5. Step 5: Solve for x
    x = 68,143,592,097.50/387,192.96
  6. Step 6: Final answer
    x = 175,993.88

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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.