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Finding the Fourth Proportional to 365,566.85, 503,360.75 and 319,989.77

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Solution

The fourth proportional to 365,566.85, 503,360.75 and 319,989.77 is: 440,604.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,566.85 : 503,360.75 = 319,989.77 : x
  2. Step 2: Convert to fraction form
    365,566.85/503,360.75 = 319,989.77/x
  3. Step 3: Cross multiply
    365,566.85x = 503,360.75 × 319,989.77
  4. Step 4: Simplify right side
    365,566.85x = 161,070,286,502.78
  5. Step 5: Solve for x
    x = 161,070,286,502.78/365,566.85
  6. Step 6: Final answer
    x = 440,604.20

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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.