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Finding the Fourth Proportional to 398,385.56, 549,772.09 and 219,537.56

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Solution

The fourth proportional to 398,385.56, 549,772.09 and 219,537.56 is: 302,961.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,385.56 : 549,772.09 = 219,537.56 : x
  2. Step 2: Convert to fraction form
    398,385.56/549,772.09 = 219,537.56/x
  3. Step 3: Cross multiply
    398,385.56x = 549,772.09 × 219,537.56
  4. Step 4: Simplify right side
    398,385.56x = 120,695,624,020.29
  5. Step 5: Solve for x
    x = 120,695,624,020.29/398,385.56
  6. Step 6: Final answer
    x = 302,961.84

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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.