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Finding the Fourth Proportional to 329,717.40, 455,010.54 and 178,814.52

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Solution

The fourth proportional to 329,717.40, 455,010.54 and 178,814.52 is: 246,764.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,717.40 : 455,010.54 = 178,814.52 : x
  2. Step 2: Convert to fraction form
    329,717.40/455,010.54 = 178,814.52/x
  3. Step 3: Cross multiply
    329,717.40x = 455,010.54 × 178,814.52
  4. Step 4: Simplify right side
    329,717.40x = 81,362,491,305.04
  5. Step 5: Solve for x
    x = 81,362,491,305.04/329,717.40
  6. Step 6: Final answer
    x = 246,764.32

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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.