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Finding the Fourth Proportional to 246,612.93, 369,930.17 and 78,145.67

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Solution

The fourth proportional to 246,612.93, 369,930.17 and 78,145.67 is: 117,221.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,612.93 : 369,930.17 = 78,145.67 : x
  2. Step 2: Convert to fraction form
    246,612.93/369,930.17 = 78,145.67/x
  3. Step 3: Cross multiply
    246,612.93x = 369,930.17 × 78,145.67
  4. Step 4: Simplify right side
    246,612.93x = 28,908,440,987.86
  5. Step 5: Solve for x
    x = 28,908,440,987.86/246,612.93
  6. Step 6: Final answer
    x = 117,221.92

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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.