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Finding the Fourth Proportional to 365,390.19, 503,779.64 and 279,454.59

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Solution

The fourth proportional to 365,390.19, 503,779.64 and 279,454.59 is: 385,296.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,390.19 : 503,779.64 = 279,454.59 : x
  2. Step 2: Convert to fraction form
    365,390.19/503,779.64 = 279,454.59/x
  3. Step 3: Cross multiply
    365,390.19x = 503,779.64 × 279,454.59
  4. Step 4: Simplify right side
    365,390.19x = 140,783,531,349.28
  5. Step 5: Solve for x
    x = 140,783,531,349.28/365,390.19
  6. Step 6: Final answer
    x = 385,296.42

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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.