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Finding the Fourth Proportional to 275,485.60, 413,228.40 and 272,861.20

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Solution

The fourth proportional to 275,485.60, 413,228.40 and 272,861.20 is: 409,291.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,485.60 : 413,228.40 = 272,861.20 : x
  2. Step 2: Convert to fraction form
    275,485.60/413,228.40 = 272,861.20/x
  3. Step 3: Cross multiply
    275,485.60x = 413,228.40 × 272,861.20
  4. Step 4: Simplify right side
    275,485.60x = 112,753,997,098.08
  5. Step 5: Solve for x
    x = 112,753,997,098.08/275,485.60
  6. Step 6: Final answer
    x = 409,291.80

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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.