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Finding the Fourth Proportional to 389,187.86, 583,781.80 and 179,002.58

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Solution

The fourth proportional to 389,187.86, 583,781.80 and 179,002.58 is: 268,503.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,187.86 : 583,781.80 = 179,002.58 : x
  2. Step 2: Convert to fraction form
    389,187.86/583,781.80 = 179,002.58/x
  3. Step 3: Cross multiply
    389,187.86x = 583,781.80 × 179,002.58
  4. Step 4: Simplify right side
    389,187.86x = 104,498,448,357.04
  5. Step 5: Solve for x
    x = 104,498,448,357.04/389,187.86
  6. Step 6: Final answer
    x = 268,503.87

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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.