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Finding the Fourth Proportional to 274,368.90, 384,378.90 and 274,368.90

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Solution

The fourth proportional to 274,368.90, 384,378.90 and 274,368.90 is: 384,378.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,368.90 : 384,378.90 = 274,368.90 : x
  2. Step 2: Convert to fraction form
    274,368.90/384,378.90 = 274,368.90/x
  3. Step 3: Cross multiply
    274,368.90x = 384,378.90 × 274,368.90
  4. Step 4: Simplify right side
    274,368.90x = 105,461,615,976.21
  5. Step 5: Solve for x
    x = 105,461,615,976.21/274,368.90
  6. Step 6: Final answer
    x = 384,378.90

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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.