Home / 389,740.20-584,610.30-254,437.80

Finding the Fourth Proportional to 389,740.20, 584,610.30 and 254,437.80

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Solution

The fourth proportional to 389,740.20, 584,610.30 and 254,437.80 is: 381,656.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,740.20 : 584,610.30 = 254,437.80 : x
  2. Step 2: Convert to fraction form
    389,740.20/584,610.30 = 254,437.80/x
  3. Step 3: Cross multiply
    389,740.20x = 584,610.30 × 254,437.80
  4. Step 4: Simplify right side
    389,740.20x = 148,746,958,589.34
  5. Step 5: Solve for x
    x = 148,746,958,589.34/389,740.20
  6. Step 6: Final answer
    x = 381,656.70

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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.