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Finding the Fourth Proportional to 378,072.55, 567,108.83 and 111,812.34

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Solution

The fourth proportional to 378,072.55, 567,108.83 and 111,812.34 is: 167,718.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,072.55 : 567,108.83 = 111,812.34 : x
  2. Step 2: Convert to fraction form
    378,072.55/567,108.83 = 111,812.34/x
  3. Step 3: Cross multiply
    378,072.55x = 567,108.83 × 111,812.34
  4. Step 4: Simplify right side
    378,072.55x = 63,409,765,316.96
  5. Step 5: Solve for x
    x = 63,409,765,316.96/378,072.55
  6. Step 6: Final answer
    x = 167,718.51

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1.5x scale

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.