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Finding the Fourth Proportional to 299,430.40, 449,145.60 and 193,142.20

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Solution

The fourth proportional to 299,430.40, 449,145.60 and 193,142.20 is: 289,713.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,430.40 : 449,145.60 = 193,142.20 : x
  2. Step 2: Convert to fraction form
    299,430.40/449,145.60 = 193,142.20/x
  3. Step 3: Cross multiply
    299,430.40x = 449,145.60 × 193,142.20
  4. Step 4: Simplify right side
    299,430.40x = 86,748,969,304.32
  5. Step 5: Solve for x
    x = 86,748,969,304.32/299,430.40
  6. Step 6: Final answer
    x = 289,713.30

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1.5x scale

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.