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Finding the Fourth Proportional to 578,385.62, 867,615.18 and 178,992.86

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Solution

The fourth proportional to 578,385.62, 867,615.18 and 178,992.86 is: 268,500.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,385.62 : 867,615.18 = 178,992.86 : x
  2. Step 2: Convert to fraction form
    578,385.62/867,615.18 = 178,992.86/x
  3. Step 3: Cross multiply
    578,385.62x = 867,615.18 × 178,992.86
  4. Step 4: Simplify right side
    578,385.62x = 155,296,922,447.62
  5. Step 5: Solve for x
    x = 155,296,922,447.62/578,385.62
  6. Step 6: Final answer
    x = 268,500.66

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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.