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Finding the Fourth Proportional to 306,516.40, 459,176.70 and 172,992.76

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Solution

The fourth proportional to 306,516.40, 459,176.70 and 172,992.76 is: 259,151.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,516.40 : 459,176.70 = 172,992.76 : x
  2. Step 2: Convert to fraction form
    306,516.40/459,176.70 = 172,992.76/x
  3. Step 3: Cross multiply
    306,516.40x = 459,176.70 × 172,992.76
  4. Step 4: Simplify right side
    306,516.40x = 79,434,244,660.69
  5. Step 5: Solve for x
    x = 79,434,244,660.69/306,516.40
  6. Step 6: Final answer
    x = 259,151.70

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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.