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Finding the Fourth Proportional to 342,655.41, 513,999.99 and 89,936.61

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Solution

The fourth proportional to 342,655.41, 513,999.99 and 89,936.61 is: 134,909.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,655.41 : 513,999.99 = 89,936.61 : x
  2. Step 2: Convert to fraction form
    342,655.41/513,999.99 = 89,936.61/x
  3. Step 3: Cross multiply
    342,655.41x = 513,999.99 × 89,936.61
  4. Step 4: Simplify right side
    342,655.41x = 46,227,416,640.63
  5. Step 5: Solve for x
    x = 46,227,416,640.63/342,655.41
  6. Step 6: Final answer
    x = 134,909.34

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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.