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Finding the Fourth Proportional to 328,981.37, 453,995.72 and 178,078.37

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Solution

The fourth proportional to 328,981.37, 453,995.72 and 178,078.37 is: 245,748.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,981.37 : 453,995.72 = 178,078.37 : x
  2. Step 2: Convert to fraction form
    328,981.37/453,995.72 = 178,078.37/x
  3. Step 3: Cross multiply
    328,981.37x = 453,995.72 × 178,078.37
  4. Step 4: Simplify right side
    328,981.37x = 80,846,815,312.00
  5. Step 5: Solve for x
    x = 80,846,815,312.00/328,981.37
  6. Step 6: Final answer
    x = 245,748.92

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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.