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Finding the Fourth Proportional to 212,564.64, 318,569.76 and 107,326.56

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Solution

The fourth proportional to 212,564.64, 318,569.76 and 107,326.56 is: 160,849.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,564.64 : 318,569.76 = 107,326.56 : x
  2. Step 2: Convert to fraction form
    212,564.64/318,569.76 = 107,326.56/x
  3. Step 3: Cross multiply
    212,564.64x = 318,569.76 × 107,326.56
  4. Step 4: Simplify right side
    212,564.64x = 34,190,996,460.83
  5. Step 5: Solve for x
    x = 34,190,996,460.83/212,564.64
  6. Step 6: Final answer
    x = 160,849.88

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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.