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Finding the Fourth Proportional to 306,589.50, 459,910.17 and 84,973.50

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Solution

The fourth proportional to 306,589.50, 459,910.17 and 84,973.50 is: 127,467.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,589.50 : 459,910.17 = 84,973.50 : x
  2. Step 2: Convert to fraction form
    306,589.50/459,910.17 = 84,973.50/x
  3. Step 3: Cross multiply
    306,589.50x = 459,910.17 × 84,973.50
  4. Step 4: Simplify right side
    306,589.50x = 39,080,176,830.50
  5. Step 5: Solve for x
    x = 39,080,176,830.50/306,589.50
  6. Step 6: Final answer
    x = 127,467.43

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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.