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Finding the Fourth Proportional to 329,089.20, 493,633.80 and 303,428.40

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Solution

The fourth proportional to 329,089.20, 493,633.80 and 303,428.40 is: 455,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,089.20 : 493,633.80 = 303,428.40 : x
  2. Step 2: Convert to fraction form
    329,089.20/493,633.80 = 303,428.40/x
  3. Step 3: Cross multiply
    329,089.20x = 493,633.80 × 303,428.40
  4. Step 4: Simplify right side
    329,089.20x = 149,782,514,119.92
  5. Step 5: Solve for x
    x = 149,782,514,119.92/329,089.20
  6. Step 6: Final answer
    x = 455,142.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.