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Finding the Fourth Proportional to 212,679.40, 319,019.04 and 62,908

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Solution

The fourth proportional to 212,679.40, 319,019.04 and 62,908 is: 94,361.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,679.40 : 319,019.04 = 62,908 : x
  2. Step 2: Convert to fraction form
    212,679.40/319,019.04 = 62,908/x
  3. Step 3: Cross multiply
    212,679.40x = 319,019.04 × 62,908
  4. Step 4: Simplify right side
    212,679.40x = 20,068,849,768.32
  5. Step 5: Solve for x
    x = 20,068,849,768.32/212,679.40
  6. Step 6: Final answer
    x = 94,361.98

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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.