Home / 420,859.32-580,788.86-229,872.66

Finding the Fourth Proportional to 420,859.32, 580,788.86 and 229,872.66

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Solution

The fourth proportional to 420,859.32, 580,788.86 and 229,872.66 is: 317,225.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,859.32 : 580,788.86 = 229,872.66 : x
  2. Step 2: Convert to fraction form
    420,859.32/580,788.86 = 229,872.66/x
  3. Step 3: Cross multiply
    420,859.32x = 580,788.86 × 229,872.66
  4. Step 4: Simplify right side
    420,859.32x = 133,507,480,146.57
  5. Step 5: Solve for x
    x = 133,507,480,146.57/420,859.32
  6. Step 6: Final answer
    x = 317,225.91

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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.