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Finding the Fourth Proportional to 328,976.76, 453,987.80 and 178,073.76

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Solution

The fourth proportional to 328,976.76, 453,987.80 and 178,073.76 is: 245,741.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,976.76 : 453,987.80 = 178,073.76 : x
  2. Step 2: Convert to fraction form
    328,976.76/453,987.80 = 178,073.76/x
  3. Step 3: Cross multiply
    328,976.76x = 453,987.80 × 178,073.76
  4. Step 4: Simplify right side
    328,976.76x = 80,843,314,540.13
  5. Step 5: Solve for x
    x = 80,843,314,540.13/328,976.76
  6. Step 6: Final answer
    x = 245,741.72

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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.