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Finding the Fourth Proportional to 306,293.60, 459,440.40 and 221,656.70

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Solution

The fourth proportional to 306,293.60, 459,440.40 and 221,656.70 is: 332,485.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,293.60 : 459,440.40 = 221,656.70 : x
  2. Step 2: Convert to fraction form
    306,293.60/459,440.40 = 221,656.70/x
  3. Step 3: Cross multiply
    306,293.60x = 459,440.40 × 221,656.70
  4. Step 4: Simplify right side
    306,293.60x = 101,838,042,910.68
  5. Step 5: Solve for x
    x = 101,838,042,910.68/306,293.60
  6. Step 6: Final answer
    x = 332,485.05

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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.