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Finding the Fourth Proportional to 328,921.32, 453,911.46 and 178,018.32

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Solution

The fourth proportional to 328,921.32, 453,911.46 and 178,018.32 is: 245,665.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,921.32 : 453,911.46 = 178,018.32 : x
  2. Step 2: Convert to fraction form
    328,921.32/453,911.46 = 178,018.32/x
  3. Step 3: Cross multiply
    328,921.32x = 453,911.46 × 178,018.32
  4. Step 4: Simplify right side
    328,921.32x = 80,804,555,537.95
  5. Step 5: Solve for x
    x = 80,804,555,537.95/328,921.32
  6. Step 6: Final answer
    x = 245,665.30

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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.