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Finding the Fourth Proportional to 328,980.42, 453,993.66 and 178,077.42

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Solution

The fourth proportional to 328,980.42, 453,993.66 and 178,077.42 is: 245,747.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,980.42 : 453,993.66 = 178,077.42 : x
  2. Step 2: Convert to fraction form
    328,980.42/453,993.66 = 178,077.42/x
  3. Step 3: Cross multiply
    328,980.42x = 453,993.66 × 178,077.42
  4. Step 4: Simplify right side
    328,980.42x = 80,846,019,669.16
  5. Step 5: Solve for x
    x = 80,846,019,669.16/328,980.42
  6. Step 6: Final answer
    x = 245,747.21

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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.