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Finding the Fourth Proportional to 351,353.73, 485,685.33 and 313,488.57

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Solution

The fourth proportional to 351,353.73, 485,685.33 and 313,488.57 is: 433,343.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,353.73 : 485,685.33 = 313,488.57 : x
  2. Step 2: Convert to fraction form
    351,353.73/485,685.33 = 313,488.57/x
  3. Step 3: Cross multiply
    351,353.73x = 485,685.33 × 313,488.57
  4. Step 4: Simplify right side
    351,353.73x = 152,256,799,571.68
  5. Step 5: Solve for x
    x = 152,256,799,571.68/351,353.73
  6. Step 6: Final answer
    x = 433,343.34

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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.