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Finding the Fourth Proportional to 316,800.56, 475,202.46 and 80,143.45

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Solution

The fourth proportional to 316,800.56, 475,202.46 and 80,143.45 is: 120,215.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,800.56 : 475,202.46 = 80,143.45 : x
  2. Step 2: Convert to fraction form
    316,800.56/475,202.46 = 80,143.45/x
  3. Step 3: Cross multiply
    316,800.56x = 475,202.46 × 80,143.45
  4. Step 4: Simplify right side
    316,800.56x = 38,084,362,216.87
  5. Step 5: Solve for x
    x = 38,084,362,216.87/316,800.56
  6. Step 6: Final answer
    x = 120,215.58

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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.