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Finding the Fourth Proportional to 299,347.80, 449,021.70 and 288,850.20

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Solution

The fourth proportional to 299,347.80, 449,021.70 and 288,850.20 is: 433,275.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,347.80 : 449,021.70 = 288,850.20 : x
  2. Step 2: Convert to fraction form
    299,347.80/449,021.70 = 288,850.20/x
  3. Step 3: Cross multiply
    299,347.80x = 449,021.70 × 288,850.20
  4. Step 4: Simplify right side
    299,347.80x = 129,700,007,849.34
  5. Step 5: Solve for x
    x = 129,700,007,849.34/299,347.80
  6. Step 6: Final answer
    x = 433,275.30

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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.