Home / 389,877.20-584,815.80-179,925.20

Finding the Fourth Proportional to 389,877.20, 584,815.80 and 179,925.20

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Solution

The fourth proportional to 389,877.20, 584,815.80 and 179,925.20 is: 269,887.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,877.20 : 584,815.80 = 179,925.20 : x
  2. Step 2: Convert to fraction form
    389,877.20/584,815.80 = 179,925.20/x
  3. Step 3: Cross multiply
    389,877.20x = 584,815.80 × 179,925.20
  4. Step 4: Simplify right side
    389,877.20x = 105,223,099,778.16
  5. Step 5: Solve for x
    x = 105,223,099,778.16/389,877.20
  6. Step 6: Final answer
    x = 269,887.80

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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.