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Finding the Fourth Proportional to 351,458.89, 527,079.36 and 126,790.12

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Solution

The fourth proportional to 351,458.89, 527,079.36 and 126,790.12 is: 190,145.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,458.89 : 527,079.36 = 126,790.12 : x
  2. Step 2: Convert to fraction form
    351,458.89/527,079.36 = 126,790.12/x
  3. Step 3: Cross multiply
    351,458.89x = 527,079.36 × 126,790.12
  4. Step 4: Simplify right side
    351,458.89x = 66,828,455,303.92
  5. Step 5: Solve for x
    x = 66,828,455,303.92/351,458.89
  6. Step 6: Final answer
    x = 190,145.87

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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.