Home / 428,692.18-591,621.80-237,705.57

Finding the Fourth Proportional to 428,692.18, 591,621.80 and 237,705.57

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Solution

The fourth proportional to 428,692.18, 591,621.80 and 237,705.57 is: 328,048.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,692.18 : 591,621.80 = 237,705.57 : x
  2. Step 2: Convert to fraction form
    428,692.18/591,621.80 = 237,705.57/x
  3. Step 3: Cross multiply
    428,692.18x = 591,621.80 × 237,705.57
  4. Step 4: Simplify right side
    428,692.18x = 140,631,797,193.43
  5. Step 5: Solve for x
    x = 140,631,797,193.43/428,692.18
  6. Step 6: Final answer
    x = 328,048.43

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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.