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Finding the Fourth Proportional to 315,474.40, 435,348.96 and 179,505.40

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Solution

The fourth proportional to 315,474.40, 435,348.96 and 179,505.40 is: 247,714.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,474.40 : 435,348.96 = 179,505.40 : x
  2. Step 2: Convert to fraction form
    315,474.40/435,348.96 = 179,505.40/x
  3. Step 3: Cross multiply
    315,474.40x = 435,348.96 × 179,505.40
  4. Step 4: Simplify right side
    315,474.40x = 78,147,489,204.38
  5. Step 5: Solve for x
    x = 78,147,489,204.38/315,474.40
  6. Step 6: Final answer
    x = 247,714.20

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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.