Home / 356,200.40-491,359.56-243,189.20

Finding the Fourth Proportional to 356,200.40, 491,359.56 and 243,189.20

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Solution

The fourth proportional to 356,200.40, 491,359.56 and 243,189.20 is: 335,466.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,200.40 : 491,359.56 = 243,189.20 : x
  2. Step 2: Convert to fraction form
    356,200.40/491,359.56 = 243,189.20/x
  3. Step 3: Cross multiply
    356,200.40x = 491,359.56 × 243,189.20
  4. Step 4: Simplify right side
    356,200.40x = 119,493,338,308.75
  5. Step 5: Solve for x
    x = 119,493,338,308.75/356,200.40
  6. Step 6: Final answer
    x = 335,466.60

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1.5x scale

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.