Home / 438,057.20-657,085.80-305,087.60

Finding the Fourth Proportional to 438,057.20, 657,085.80 and 305,087.60

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Solution

The fourth proportional to 438,057.20, 657,085.80 and 305,087.60 is: 457,631.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,057.20 : 657,085.80 = 305,087.60 : x
  2. Step 2: Convert to fraction form
    438,057.20/657,085.80 = 305,087.60/x
  3. Step 3: Cross multiply
    438,057.20x = 657,085.80 × 305,087.60
  4. Step 4: Simplify right side
    438,057.20x = 200,468,729,716.08
  5. Step 5: Solve for x
    x = 200,468,729,716.08/438,057.20
  6. Step 6: Final answer
    x = 457,631.40

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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.