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Finding the Fourth Proportional to 420,573.01, 580,383.23 and 239,281.04

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Solution

The fourth proportional to 420,573.01, 580,383.23 and 239,281.04 is: 330,203.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,573.01 : 580,383.23 = 239,281.04 : x
  2. Step 2: Convert to fraction form
    420,573.01/580,383.23 = 239,281.04/x
  3. Step 3: Cross multiply
    420,573.01x = 580,383.23 × 239,281.04
  4. Step 4: Simplify right side
    420,573.01x = 138,874,699,862.86
  5. Step 5: Solve for x
    x = 138,874,699,862.86/420,573.01
  6. Step 6: Final answer
    x = 330,203.55

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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.