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Finding the Fourth Proportional to 371,133.09, 556,694.78 and 90,652.77

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Solution

The fourth proportional to 371,133.09, 556,694.78 and 90,652.77 is: 135,977.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,133.09 : 556,694.78 = 90,652.77 : x
  2. Step 2: Convert to fraction form
    371,133.09/556,694.78 = 90,652.77/x
  3. Step 3: Cross multiply
    371,133.09x = 556,694.78 × 90,652.77
  4. Step 4: Simplify right side
    371,133.09x = 50,465,923,398.28
  5. Step 5: Solve for x
    x = 50,465,923,398.28/371,133.09
  6. Step 6: Final answer
    x = 135,977.97

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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.