Home / 320,278.62-480,437.75-107,065.72

Finding the Fourth Proportional to 320,278.62, 480,437.75 and 107,065.72

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Solution

The fourth proportional to 320,278.62, 480,437.75 and 107,065.72 is: 160,605.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,278.62 : 480,437.75 = 107,065.72 : x
  2. Step 2: Convert to fraction form
    320,278.62/480,437.75 = 107,065.72/x
  3. Step 3: Cross multiply
    320,278.62x = 480,437.75 × 107,065.72
  4. Step 4: Simplify right side
    320,278.62x = 51,438,413,618.93
  5. Step 5: Solve for x
    x = 51,438,413,618.93/320,278.62
  6. Step 6: Final answer
    x = 160,605.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.