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Finding the Fourth Proportional to 306,500.10, 459,750.15 and 221,863.20

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Solution

The fourth proportional to 306,500.10, 459,750.15 and 221,863.20 is: 332,794.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,500.10 : 459,750.15 = 221,863.20 : x
  2. Step 2: Convert to fraction form
    306,500.10/459,750.15 = 221,863.20/x
  3. Step 3: Cross multiply
    306,500.10x = 459,750.15 × 221,863.20
  4. Step 4: Simplify right side
    306,500.10x = 102,001,639,479.48
  5. Step 5: Solve for x
    x = 102,001,639,479.48/306,500.10
  6. Step 6: Final answer
    x = 332,794.80

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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.