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Finding the Fourth Proportional to 242,672.80, 364,009.20 and 220,511.20

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Solution

The fourth proportional to 242,672.80, 364,009.20 and 220,511.20 is: 330,766.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,672.80 : 364,009.20 = 220,511.20 : x
  2. Step 2: Convert to fraction form
    242,672.80/364,009.20 = 220,511.20/x
  3. Step 3: Cross multiply
    242,672.80x = 364,009.20 × 220,511.20
  4. Step 4: Simplify right side
    242,672.80x = 80,268,105,503.04
  5. Step 5: Solve for x
    x = 80,268,105,503.04/242,672.80
  6. Step 6: Final answer
    x = 330,766.80

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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.