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Finding the Fourth Proportional to 348,379.76, 480,779.88 and 205,145.84

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Solution

The fourth proportional to 348,379.76, 480,779.88 and 205,145.84 is: 283,110.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,379.76 : 480,779.88 = 205,145.84 : x
  2. Step 2: Convert to fraction form
    348,379.76/480,779.88 = 205,145.84/x
  3. Step 3: Cross multiply
    348,379.76x = 480,779.88 × 205,145.84
  4. Step 4: Simplify right side
    348,379.76x = 98,629,992,337.70
  5. Step 5: Solve for x
    x = 98,629,992,337.70/348,379.76
  6. Step 6: Final answer
    x = 283,110.57

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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.