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Finding the Fourth Proportional to 315,571.44, 435,470.79 and 179,638.47

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Solution

The fourth proportional to 315,571.44, 435,470.79 and 179,638.47 is: 247,890.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,571.44 : 435,470.79 = 179,638.47 : x
  2. Step 2: Convert to fraction form
    315,571.44/435,470.79 = 179,638.47/x
  3. Step 3: Cross multiply
    315,571.44x = 435,470.79 × 179,638.47
  4. Step 4: Simplify right side
    315,571.44x = 78,227,306,445.29
  5. Step 5: Solve for x
    x = 78,227,306,445.29/315,571.44
  6. Step 6: Final answer
    x = 247,890.96

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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.