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Finding the Fourth Proportional to 365,379.64, 503,765.08 and 279,444.04

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Solution

The fourth proportional to 365,379.64, 503,765.08 and 279,444.04 is: 385,281.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,379.64 : 503,765.08 = 279,444.04 : x
  2. Step 2: Convert to fraction form
    365,379.64/503,765.08 = 279,444.04/x
  3. Step 3: Cross multiply
    365,379.64x = 503,765.08 × 279,444.04
  4. Step 4: Simplify right side
    365,379.64x = 140,774,149,166.12
  5. Step 5: Solve for x
    x = 140,774,149,166.12/365,379.64
  6. Step 6: Final answer
    x = 385,281.87

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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.