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Finding the Fourth Proportional to 341,490.40, 511,069.20 and 313,496.80

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Solution

The fourth proportional to 341,490.40, 511,069.20 and 313,496.80 is: 469,174.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,490.40 : 511,069.20 = 313,496.80 : x
  2. Step 2: Convert to fraction form
    341,490.40/511,069.20 = 313,496.80/x
  3. Step 3: Cross multiply
    341,490.40x = 511,069.20 × 313,496.80
  4. Step 4: Simplify right side
    341,490.40x = 160,218,558,778.56
  5. Step 5: Solve for x
    x = 160,218,558,778.56/341,490.40
  6. Step 6: Final answer
    x = 469,174.42

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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.