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Finding the Fourth Proportional to 313,394.40, 469,400.40 and 271,922.40

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Solution

The fourth proportional to 313,394.40, 469,400.40 and 271,922.40 is: 407,283.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,394.40 : 469,400.40 = 271,922.40 : x
  2. Step 2: Convert to fraction form
    313,394.40/469,400.40 = 271,922.40/x
  3. Step 3: Cross multiply
    313,394.40x = 469,400.40 × 271,922.40
  4. Step 4: Simplify right side
    313,394.40x = 127,640,483,328.96
  5. Step 5: Solve for x
    x = 127,640,483,328.96/313,394.40
  6. Step 6: Final answer
    x = 407,283.87

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1.5x scale

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.