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Finding the Fourth Proportional to 379,693.08, 523,998.90 and 218,544.12

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Solution

The fourth proportional to 379,693.08, 523,998.90 and 218,544.12 is: 301,603.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,693.08 : 523,998.90 = 218,544.12 : x
  2. Step 2: Convert to fraction form
    379,693.08/523,998.90 = 218,544.12/x
  3. Step 3: Cross multiply
    379,693.08x = 523,998.90 × 218,544.12
  4. Step 4: Simplify right side
    379,693.08x = 114,516,878,481.47
  5. Step 5: Solve for x
    x = 114,516,878,481.47/379,693.08
  6. Step 6: Final answer
    x = 301,603.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.