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Finding the Fourth Proportional to 365,390.94, 503,780.67 and 279,455.34

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Solution

The fourth proportional to 365,390.94, 503,780.67 and 279,455.34 is: 385,297.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,390.94 : 503,780.67 = 279,455.34 : x
  2. Step 2: Convert to fraction form
    365,390.94/503,780.67 = 279,455.34/x
  3. Step 3: Cross multiply
    365,390.94x = 503,780.67 × 279,455.34
  4. Step 4: Simplify right side
    365,390.94x = 140,784,198,420.28
  5. Step 5: Solve for x
    x = 140,784,198,420.28/365,390.94
  6. Step 6: Final answer
    x = 385,297.45

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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.