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Finding the Fourth Proportional to 306,100.08, 459,216.90 and 128,505.96

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Solution

The fourth proportional to 306,100.08, 459,216.90 and 128,505.96 is: 192,786.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,100.08 : 459,216.90 = 128,505.96 : x
  2. Step 2: Convert to fraction form
    306,100.08/459,216.90 = 128,505.96/x
  3. Step 3: Cross multiply
    306,100.08x = 459,216.90 × 128,505.96
  4. Step 4: Simplify right side
    306,100.08x = 59,012,108,582.72
  5. Step 5: Solve for x
    x = 59,012,108,582.72/306,100.08
  6. Step 6: Final answer
    x = 192,786.98

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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.