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Finding the Fourth Proportional to 400,549.80, 600,748.20 and 120,067.05

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Solution

The fourth proportional to 400,549.80, 600,748.20 and 120,067.05 is: 180,077.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,549.80 : 600,748.20 = 120,067.05 : x
  2. Step 2: Convert to fraction form
    400,549.80/600,748.20 = 120,067.05/x
  3. Step 3: Cross multiply
    400,549.80x = 600,748.20 × 120,067.05
  4. Step 4: Simplify right side
    400,549.80x = 72,130,064,166.81
  5. Step 5: Solve for x
    x = 72,130,064,166.81/400,549.80
  6. Step 6: Final answer
    x = 180,077.64

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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.