Home / 389,613.20-584,419.80-179,661.20

Finding the Fourth Proportional to 389,613.20, 584,419.80 and 179,661.20

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Solution

The fourth proportional to 389,613.20, 584,419.80 and 179,661.20 is: 269,491.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,613.20 : 584,419.80 = 179,661.20 : x
  2. Step 2: Convert to fraction form
    389,613.20/584,419.80 = 179,661.20/x
  3. Step 3: Cross multiply
    389,613.20x = 584,419.80 × 179,661.20
  4. Step 4: Simplify right side
    389,613.20x = 104,997,562,571.76
  5. Step 5: Solve for x
    x = 104,997,562,571.76/389,613.20
  6. Step 6: Final answer
    x = 269,491.80

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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.