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Finding the Fourth Proportional to 274,320.40, 384,311 and 274,320.40

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Solution

The fourth proportional to 274,320.40, 384,311 and 274,320.40 is: 384,311

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,320.40 : 384,311 = 274,320.40 : x
  2. Step 2: Convert to fraction form
    274,320.40/384,311 = 274,320.40/x
  3. Step 3: Cross multiply
    274,320.40x = 384,311 × 274,320.40
  4. Step 4: Simplify right side
    274,320.40x = 105,424,347,244.40
  5. Step 5: Solve for x
    x = 105,424,347,244.40/274,320.40
  6. Step 6: Final answer
    x = 384,311

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.