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Finding the Fourth Proportional to 212,780.56, 319,282.56 and 94,536.64

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Solution

The fourth proportional to 212,780.56, 319,282.56 and 94,536.64 is: 141,854.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,780.56 : 319,282.56 = 94,536.64 : x
  2. Step 2: Convert to fraction form
    212,780.56/319,282.56 = 94,536.64/x
  3. Step 3: Cross multiply
    212,780.56x = 319,282.56 × 94,536.64
  4. Step 4: Simplify right side
    212,780.56x = 30,183,900,433.00
  5. Step 5: Solve for x
    x = 30,183,900,433.00/212,780.56
  6. Step 6: Final answer
    x = 141,854.60

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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.