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Finding the Fourth Proportional to 219,613.72, 329,420.58 and 53,400.28

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Solution

The fourth proportional to 219,613.72, 329,420.58 and 53,400.28 is: 80,100.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,613.72 : 329,420.58 = 53,400.28 : x
  2. Step 2: Convert to fraction form
    219,613.72/329,420.58 = 53,400.28/x
  3. Step 3: Cross multiply
    219,613.72x = 329,420.58 × 53,400.28
  4. Step 4: Simplify right side
    219,613.72x = 17,591,151,209.76
  5. Step 5: Solve for x
    x = 17,591,151,209.76/219,613.72
  6. Step 6: Final answer
    x = 80,100.42

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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.