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Finding the Fourth Proportional to 305,948.40, 458,474.40 and 274,358.40

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Solution

The fourth proportional to 305,948.40, 458,474.40 and 274,358.40 is: 411,135.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,948.40 : 458,474.40 = 274,358.40 : x
  2. Step 2: Convert to fraction form
    305,948.40/458,474.40 = 274,358.40/x
  3. Step 3: Cross multiply
    305,948.40x = 458,474.40 × 274,358.40
  4. Step 4: Simplify right side
    305,948.40x = 125,786,302,824.96
  5. Step 5: Solve for x
    x = 125,786,302,824.96/305,948.40
  6. Step 6: Final answer
    x = 411,135.68

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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.