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Finding the Fourth Proportional to 330,760.80, 456,418.80 and 228,895.20

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Solution

The fourth proportional to 330,760.80, 456,418.80 and 228,895.20 is: 315,853.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,760.80 : 456,418.80 = 228,895.20 : x
  2. Step 2: Convert to fraction form
    330,760.80/456,418.80 = 228,895.20/x
  3. Step 3: Cross multiply
    330,760.80x = 456,418.80 × 228,895.20
  4. Step 4: Simplify right side
    330,760.80x = 104,472,072,509.76
  5. Step 5: Solve for x
    x = 104,472,072,509.76/330,760.80
  6. Step 6: Final answer
    x = 315,853.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.