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Finding the Fourth Proportional to 303,315.40, 454,973.10 and 280,505.80

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Solution

The fourth proportional to 303,315.40, 454,973.10 and 280,505.80 is: 420,758.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,315.40 : 454,973.10 = 280,505.80 : x
  2. Step 2: Convert to fraction form
    303,315.40/454,973.10 = 280,505.80/x
  3. Step 3: Cross multiply
    303,315.40x = 454,973.10 × 280,505.80
  4. Step 4: Simplify right side
    303,315.40x = 127,622,593,393.98
  5. Step 5: Solve for x
    x = 127,622,593,393.98/303,315.40
  6. Step 6: Final answer
    x = 420,758.70

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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.