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Finding the Fourth Proportional to 365,130.12, 503,879.52 and 203,985.21

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Solution

The fourth proportional to 365,130.12, 503,879.52 and 203,985.21 is: 281,499.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,130.12 : 503,879.52 = 203,985.21 : x
  2. Step 2: Convert to fraction form
    365,130.12/503,879.52 = 203,985.21/x
  3. Step 3: Cross multiply
    365,130.12x = 503,879.52 × 203,985.21
  4. Step 4: Simplify right side
    365,130.12x = 102,783,969,701.90
  5. Step 5: Solve for x
    x = 102,783,969,701.90/365,130.12
  6. Step 6: Final answer
    x = 281,499.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.