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Finding the Fourth Proportional to 299,969.40, 449,962.20 and 131,403

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Solution

The fourth proportional to 299,969.40, 449,962.20 and 131,403 is: 197,108.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,969.40 : 449,962.20 = 131,403 : x
  2. Step 2: Convert to fraction form
    299,969.40/449,962.20 = 131,403/x
  3. Step 3: Cross multiply
    299,969.40x = 449,962.20 × 131,403
  4. Step 4: Simplify right side
    299,969.40x = 59,126,382,966.60
  5. Step 5: Solve for x
    x = 59,126,382,966.60/299,969.40
  6. Step 6: Final answer
    x = 197,108.05

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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.