Home / 389,610.86-584,416.31-105,279.59

Finding the Fourth Proportional to 389,610.86, 584,416.31 and 105,279.59

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Solution

The fourth proportional to 389,610.86, 584,416.31 and 105,279.59 is: 157,919.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,610.86 : 584,416.31 = 105,279.59 : x
  2. Step 2: Convert to fraction form
    389,610.86/584,416.31 = 105,279.59/x
  3. Step 3: Cross multiply
    389,610.86x = 584,416.31 × 105,279.59
  4. Step 4: Simplify right side
    389,610.86x = 61,527,110,440.76
  5. Step 5: Solve for x
    x = 61,527,110,440.76/389,610.86
  6. Step 6: Final answer
    x = 157,919.39

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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.