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Finding the Fourth Proportional to 228,779.40, 343,223.09 and 79,020.93

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Solution

The fourth proportional to 228,779.40, 343,223.09 and 79,020.93 is: 118,550.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,779.40 : 343,223.09 = 79,020.93 : x
  2. Step 2: Convert to fraction form
    228,779.40/343,223.09 = 79,020.93/x
  3. Step 3: Cross multiply
    228,779.40x = 343,223.09 × 79,020.93
  4. Step 4: Simplify right side
    228,779.40x = 27,121,807,769.27
  5. Step 5: Solve for x
    x = 27,121,807,769.27/228,779.40
  6. Step 6: Final answer
    x = 118,550.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.