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Finding the Fourth Proportional to 486,907.40, 730,579.80 and 220,530.80

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Solution

The fourth proportional to 486,907.40, 730,579.80 and 220,530.80 is: 330,895.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,907.40 : 730,579.80 = 220,530.80 : x
  2. Step 2: Convert to fraction form
    486,907.40/730,579.80 = 220,530.80/x
  3. Step 3: Cross multiply
    486,907.40x = 730,579.80 × 220,530.80
  4. Step 4: Simplify right side
    486,907.40x = 161,115,347,757.84
  5. Step 5: Solve for x
    x = 161,115,347,757.84/486,907.40
  6. Step 6: Final answer
    x = 330,895.25

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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.