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Finding the Fourth Proportional to 372,661.83, 514,265.27 and 217,639.80

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Solution

The fourth proportional to 372,661.83, 514,265.27 and 217,639.80 is: 300,338.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,661.83 : 514,265.27 = 217,639.80 : x
  2. Step 2: Convert to fraction form
    372,661.83/514,265.27 = 217,639.80/x
  3. Step 3: Cross multiply
    372,661.83x = 514,265.27 × 217,639.80
  4. Step 4: Simplify right side
    372,661.83x = 111,924,589,421.55
  5. Step 5: Solve for x
    x = 111,924,589,421.55/372,661.83
  6. Step 6: Final answer
    x = 300,338.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.