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Finding the Fourth Proportional to 342,234.45, 513,386.88 and 129,181.82

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Solution

The fourth proportional to 342,234.45, 513,386.88 and 129,181.82 is: 193,786.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,234.45 : 513,386.88 = 129,181.82 : x
  2. Step 2: Convert to fraction form
    342,234.45/513,386.88 = 129,181.82/x
  3. Step 3: Cross multiply
    342,234.45x = 513,386.88 × 129,181.82
  4. Step 4: Simplify right side
    342,234.45x = 66,320,248,955.59
  5. Step 5: Solve for x
    x = 66,320,248,955.59/342,234.45
  6. Step 6: Final answer
    x = 193,786.01

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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.