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Finding the Fourth Proportional to 420,404.44, 580,170.45 and 229,430.11

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Solution

The fourth proportional to 420,404.44, 580,170.45 and 229,430.11 is: 316,620.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,404.44 : 580,170.45 = 229,430.11 : x
  2. Step 2: Convert to fraction form
    420,404.44/580,170.45 = 229,430.11/x
  3. Step 3: Cross multiply
    420,404.44x = 580,170.45 × 229,430.11
  4. Step 4: Simplify right side
    420,404.44x = 133,108,570,162.25
  5. Step 5: Solve for x
    x = 133,108,570,162.25/420,404.44
  6. Step 6: Final answer
    x = 316,620.28

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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.