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Finding the Fourth Proportional to 306,063.60, 459,095.40 and 221,426.70

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Solution

The fourth proportional to 306,063.60, 459,095.40 and 221,426.70 is: 332,140.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,063.60 : 459,095.40 = 221,426.70 : x
  2. Step 2: Convert to fraction form
    306,063.60/459,095.40 = 221,426.70/x
  3. Step 3: Cross multiply
    306,063.60x = 459,095.40 × 221,426.70
  4. Step 4: Simplify right side
    306,063.60x = 101,655,979,407.18
  5. Step 5: Solve for x
    x = 101,655,979,407.18/306,063.60
  6. Step 6: Final answer
    x = 332,140.05

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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.