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Finding the Fourth Proportional to 476,435.50, 657,539.40 and 275,231.50

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Solution

The fourth proportional to 476,435.50, 657,539.40 and 275,231.50 is: 379,853.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,435.50 : 657,539.40 = 275,231.50 : x
  2. Step 2: Convert to fraction form
    476,435.50/657,539.40 = 275,231.50/x
  3. Step 3: Cross multiply
    476,435.50x = 657,539.40 × 275,231.50
  4. Step 4: Simplify right side
    476,435.50x = 180,975,555,371.10
  5. Step 5: Solve for x
    x = 180,975,555,371.10/476,435.50
  6. Step 6: Final answer
    x = 379,853.21

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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.