Home / 419,624.40-579,084.48-228,637.20

Finding the Fourth Proportional to 419,624.40, 579,084.48 and 228,637.20

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Solution

The fourth proportional to 419,624.40, 579,084.48 and 228,637.20 is: 315,520.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,624.40 : 579,084.48 = 228,637.20 : x
  2. Step 2: Convert to fraction form
    419,624.40/579,084.48 = 228,637.20/x
  3. Step 3: Cross multiply
    419,624.40x = 579,084.48 × 228,637.20
  4. Step 4: Simplify right side
    419,624.40x = 132,400,254,070.66
  5. Step 5: Solve for x
    x = 132,400,254,070.66/419,624.40
  6. Step 6: Final answer
    x = 315,520.87

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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.