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Finding the Fourth Proportional to 419,624.40, 579,081.76 and 228,637.79

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Solution

The fourth proportional to 419,624.40, 579,081.76 and 228,637.79 is: 315,520.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,624.40 : 579,081.76 = 228,637.79 : x
  2. Step 2: Convert to fraction form
    419,624.40/579,081.76 = 228,637.79/x
  3. Step 3: Cross multiply
    419,624.40x = 579,081.76 × 228,637.79
  4. Step 4: Simplify right side
    419,624.40x = 132,399,972,540.26
  5. Step 5: Solve for x
    x = 132,399,972,540.26/419,624.40
  6. Step 6: Final answer
    x = 315,520.20

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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.