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Finding the Fourth Proportional to 508,638.56, 763,074.24 and 220,498.56

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Solution

The fourth proportional to 508,638.56, 763,074.24 and 220,498.56 is: 330,798.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,638.56 : 763,074.24 = 220,498.56 : x
  2. Step 2: Convert to fraction form
    508,638.56/763,074.24 = 220,498.56/x
  3. Step 3: Cross multiply
    508,638.56x = 763,074.24 × 220,498.56
  4. Step 4: Simplify right side
    508,638.56x = 168,256,771,093.09
  5. Step 5: Solve for x
    x = 168,256,771,093.09/508,638.56
  6. Step 6: Final answer
    x = 330,798.30

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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.