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Finding the Fourth Proportional to 351,389.80, 485,735.09 and 313,524.63

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Solution

The fourth proportional to 351,389.80, 485,735.09 and 313,524.63 is: 433,393.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,389.80 : 485,735.09 = 313,524.63 : x
  2. Step 2: Convert to fraction form
    351,389.80/485,735.09 = 313,524.63/x
  3. Step 3: Cross multiply
    351,389.80x = 485,735.09 × 313,524.63
  4. Step 4: Simplify right side
    351,389.80x = 152,289,914,370.27
  5. Step 5: Solve for x
    x = 152,289,914,370.27/351,389.80
  6. Step 6: Final answer
    x = 433,393.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.