Home / 351,790.80-527,742.24-127,128.49

Finding the Fourth Proportional to 351,790.80, 527,742.24 and 127,128.49

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Solution

The fourth proportional to 351,790.80, 527,742.24 and 127,128.49 is: 190,712.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,790.80 : 527,742.24 = 127,128.49 : x
  2. Step 2: Convert to fraction form
    351,790.80/527,742.24 = 127,128.49/x
  3. Step 3: Cross multiply
    351,790.80x = 527,742.24 × 127,128.49
  4. Step 4: Simplify right side
    351,790.80x = 67,091,072,284.33
  5. Step 5: Solve for x
    x = 67,091,072,284.33/351,790.80
  6. Step 6: Final answer
    x = 190,712.98

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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.