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Finding the Fourth Proportional to 306,129.28, 459,228.32 and 81,498.48

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Solution

The fourth proportional to 306,129.28, 459,228.32 and 81,498.48 is: 122,256.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,129.28 : 459,228.32 = 81,498.48 : x
  2. Step 2: Convert to fraction form
    306,129.28/459,228.32 = 81,498.48/x
  3. Step 3: Cross multiply
    306,129.28x = 459,228.32 × 81,498.48
  4. Step 4: Simplify right side
    306,129.28x = 37,426,410,052.95
  5. Step 5: Solve for x
    x = 37,426,410,052.95/306,129.28
  6. Step 6: Final answer
    x = 122,256.88

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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.