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Finding the Fourth Proportional to 212,914.66, 319,425.69 and 70,760.68

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Solution

The fourth proportional to 212,914.66, 319,425.69 and 70,760.68 is: 106,158.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,914.66 : 319,425.69 = 70,760.68 : x
  2. Step 2: Convert to fraction form
    212,914.66/319,425.69 = 70,760.68/x
  3. Step 3: Cross multiply
    212,914.66x = 319,425.69 × 70,760.68
  4. Step 4: Simplify right side
    212,914.66x = 22,602,778,235.31
  5. Step 5: Solve for x
    x = 22,602,778,235.31/212,914.66
  6. Step 6: Final answer
    x = 106,158.86

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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.