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Finding the Fourth Proportional to 408,291.60, 611,781.30 and 302,003.40

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Solution

The fourth proportional to 408,291.60, 611,781.30 and 302,003.40 is: 452,519.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,291.60 : 611,781.30 = 302,003.40 : x
  2. Step 2: Convert to fraction form
    408,291.60/611,781.30 = 302,003.40/x
  3. Step 3: Cross multiply
    408,291.60x = 611,781.30 × 302,003.40
  4. Step 4: Simplify right side
    408,291.60x = 184,760,032,656.42
  5. Step 5: Solve for x
    x = 184,760,032,656.42/408,291.60
  6. Step 6: Final answer
    x = 452,519.80

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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.