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Finding the Fourth Proportional to 313,495.92, 432,783.54 and 198,891.72

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Solution

The fourth proportional to 313,495.92, 432,783.54 and 198,891.72 is: 274,571.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,495.92 : 432,783.54 = 198,891.72 : x
  2. Step 2: Convert to fraction form
    313,495.92/432,783.54 = 198,891.72/x
  3. Step 3: Cross multiply
    313,495.92x = 432,783.54 × 198,891.72
  4. Step 4: Simplify right side
    313,495.92x = 86,077,062,658.29
  5. Step 5: Solve for x
    x = 86,077,062,658.29/313,495.92
  6. Step 6: Final answer
    x = 274,571.56

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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.