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Finding the Fourth Proportional to 299,417.40, 449,028.90 and 99,703.80

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Solution

The fourth proportional to 299,417.40, 449,028.90 and 99,703.80 is: 149,523.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,417.40 : 449,028.90 = 99,703.80 : x
  2. Step 2: Convert to fraction form
    299,417.40/449,028.90 = 99,703.80/x
  3. Step 3: Cross multiply
    299,417.40x = 449,028.90 × 99,703.80
  4. Step 4: Simplify right side
    299,417.40x = 44,769,887,639.82
  5. Step 5: Solve for x
    x = 44,769,887,639.82/299,417.40
  6. Step 6: Final answer
    x = 149,523.33

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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.