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Finding the Fourth Proportional to 305,737.70, 458,606.55 and 212,425.70

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Solution

The fourth proportional to 305,737.70, 458,606.55 and 212,425.70 is: 318,638.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,737.70 : 458,606.55 = 212,425.70 : x
  2. Step 2: Convert to fraction form
    305,737.70/458,606.55 = 212,425.70/x
  3. Step 3: Cross multiply
    305,737.70x = 458,606.55 × 212,425.70
  4. Step 4: Simplify right side
    305,737.70x = 97,419,817,408.34
  5. Step 5: Solve for x
    x = 97,419,817,408.34/305,737.70
  6. Step 6: Final answer
    x = 318,638.55

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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.