Home / 287,890.80-431,674.20-110,403.60

Finding the Fourth Proportional to 287,890.80, 431,674.20 and 110,403.60

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Solution

The fourth proportional to 287,890.80, 431,674.20 and 110,403.60 is: 165,543.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,890.80 : 431,674.20 = 110,403.60 : x
  2. Step 2: Convert to fraction form
    287,890.80/431,674.20 = 110,403.60/x
  3. Step 3: Cross multiply
    287,890.80x = 431,674.20 × 110,403.60
  4. Step 4: Simplify right side
    287,890.80x = 47,658,385,707.12
  5. Step 5: Solve for x
    x = 47,658,385,707.12/287,890.80
  6. Step 6: Final answer
    x = 165,543.27

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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.