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Finding the Fourth Proportional to 328,954.08, 493,429.86 and 129,134.64

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Solution

The fourth proportional to 328,954.08, 493,429.86 and 129,134.64 is: 193,701.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,954.08 : 493,429.86 = 129,134.64 : x
  2. Step 2: Convert to fraction form
    328,954.08/493,429.86 = 129,134.64/x
  3. Step 3: Cross multiply
    328,954.08x = 493,429.86 × 129,134.64
  4. Step 4: Simplify right side
    328,954.08x = 63,718,887,336.35
  5. Step 5: Solve for x
    x = 63,718,887,336.35/328,954.08
  6. Step 6: Final answer
    x = 193,701.47

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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.