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Finding the Fourth Proportional to 316,443.08, 436,690.72 and 173,201.87

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Solution

The fourth proportional to 316,443.08, 436,690.72 and 173,201.87 is: 239,018.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,443.08 : 436,690.72 = 173,201.87 : x
  2. Step 2: Convert to fraction form
    316,443.08/436,690.72 = 173,201.87/x
  3. Step 3: Cross multiply
    316,443.08x = 436,690.72 × 173,201.87
  4. Step 4: Simplify right side
    316,443.08x = 75,635,649,315.65
  5. Step 5: Solve for x
    x = 75,635,649,315.65/316,443.08
  6. Step 6: Final answer
    x = 239,018.18

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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.