Home / 511,267.12-705,088.20-320,297.20

Finding the Fourth Proportional to 511,267.12, 705,088.20 and 320,297.20

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Solution

The fourth proportional to 511,267.12, 705,088.20 and 320,297.20 is: 441,721.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,267.12 : 705,088.20 = 320,297.20 : x
  2. Step 2: Convert to fraction form
    511,267.12/705,088.20 = 320,297.20/x
  3. Step 3: Cross multiply
    511,267.12x = 705,088.20 × 320,297.20
  4. Step 4: Simplify right side
    511,267.12x = 225,837,776,213.04
  5. Step 5: Solve for x
    x = 225,837,776,213.04/511,267.12
  6. Step 6: Final answer
    x = 441,721.69

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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.