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Finding the Fourth Proportional to 329,713.50, 455,004.90 and 178,810.50

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Solution

The fourth proportional to 329,713.50, 455,004.90 and 178,810.50 is: 246,758.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,713.50 : 455,004.90 = 178,810.50 : x
  2. Step 2: Convert to fraction form
    329,713.50/455,004.90 = 178,810.50/x
  3. Step 3: Cross multiply
    329,713.50x = 455,004.90 × 178,810.50
  4. Step 4: Simplify right side
    329,713.50x = 81,359,653,671.45
  5. Step 5: Solve for x
    x = 81,359,653,671.45/329,713.50
  6. Step 6: Final answer
    x = 246,758.64

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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.