Home / 287,739.10-431,608.65-228,252.70

Finding the Fourth Proportional to 287,739.10, 431,608.65 and 228,252.70

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Solution

The fourth proportional to 287,739.10, 431,608.65 and 228,252.70 is: 342,379.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,739.10 : 431,608.65 = 228,252.70 : x
  2. Step 2: Convert to fraction form
    287,739.10/431,608.65 = 228,252.70/x
  3. Step 3: Cross multiply
    287,739.10x = 431,608.65 × 228,252.70
  4. Step 4: Simplify right side
    287,739.10x = 98,515,839,705.86
  5. Step 5: Solve for x
    x = 98,515,839,705.86/287,739.10
  6. Step 6: Final answer
    x = 342,379.05

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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.