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Finding the Fourth Proportional to 342,558.42, 513,800.67 and 89,864.22

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Solution

The fourth proportional to 342,558.42, 513,800.67 and 89,864.22 is: 134,786.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,558.42 : 513,800.67 = 89,864.22 : x
  2. Step 2: Convert to fraction form
    342,558.42/513,800.67 = 89,864.22/x
  3. Step 3: Cross multiply
    342,558.42x = 513,800.67 × 89,864.22
  4. Step 4: Simplify right side
    342,558.42x = 46,172,296,445.03
  5. Step 5: Solve for x
    x = 46,172,296,445.03/342,558.42
  6. Step 6: Final answer
    x = 134,786.63

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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.