Home / 289,210.96-399,115.31-166,635.75

Finding the Fourth Proportional to 289,210.96, 399,115.31 and 166,635.75

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Solution

The fourth proportional to 289,210.96, 399,115.31 and 166,635.75 is: 229,959.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,210.96 : 399,115.31 = 166,635.75 : x
  2. Step 2: Convert to fraction form
    289,210.96/399,115.31 = 166,635.75/x
  3. Step 3: Cross multiply
    289,210.96x = 399,115.31 × 166,635.75
  4. Step 4: Simplify right side
    289,210.96x = 66,506,879,018.33
  5. Step 5: Solve for x
    x = 66,506,879,018.33/289,210.96
  6. Step 6: Final answer
    x = 229,959.75

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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.