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Finding the Fourth Proportional to 272,269.20, 407,820.60 and 177,790.80

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Solution

The fourth proportional to 272,269.20, 407,820.60 and 177,790.80 is: 266,305.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,269.20 : 407,820.60 = 177,790.80 : x
  2. Step 2: Convert to fraction form
    272,269.20/407,820.60 = 177,790.80/x
  3. Step 3: Cross multiply
    272,269.20x = 407,820.60 × 177,790.80
  4. Step 4: Simplify right side
    272,269.20x = 72,506,750,730.48
  5. Step 5: Solve for x
    x = 72,506,750,730.48/272,269.20
  6. Step 6: Final answer
    x = 266,305.37

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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.