Home / 212,317.50-318,474.81-54,546.06

Finding the Fourth Proportional to 212,317.50, 318,474.81 and 54,546.06

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Solution

The fourth proportional to 212,317.50, 318,474.81 and 54,546.06 is: 81,818.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,317.50 : 318,474.81 = 54,546.06 : x
  2. Step 2: Convert to fraction form
    212,317.50/318,474.81 = 54,546.06/x
  3. Step 3: Cross multiply
    212,317.50x = 318,474.81 × 54,546.06
  4. Step 4: Simplify right side
    212,317.50x = 17,371,546,094.75
  5. Step 5: Solve for x
    x = 17,371,546,094.75/212,317.50
  6. Step 6: Final answer
    x = 81,818.72

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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.