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Finding the Fourth Proportional to 342,225.33, 513,425.49 and 142,479.33

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Solution

The fourth proportional to 342,225.33, 513,425.49 and 142,479.33 is: 213,755.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,225.33 : 513,425.49 = 142,479.33 : x
  2. Step 2: Convert to fraction form
    342,225.33/513,425.49 = 142,479.33/x
  3. Step 3: Cross multiply
    342,225.33x = 513,425.49 × 142,479.33
  4. Step 4: Simplify right side
    342,225.33x = 73,152,519,820.12
  5. Step 5: Solve for x
    x = 73,152,519,820.12/342,225.33
  6. Step 6: Final answer
    x = 213,755.42

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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.