Home / 313,720.90-432,933.69-177,780.72

Finding the Fourth Proportional to 313,720.90, 432,933.69 and 177,780.72

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Solution

The fourth proportional to 313,720.90, 432,933.69 and 177,780.72 is: 245,336.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,720.90 : 432,933.69 = 177,780.72 : x
  2. Step 2: Convert to fraction form
    313,720.90/432,933.69 = 177,780.72/x
  3. Step 3: Cross multiply
    313,720.90x = 432,933.69 × 177,780.72
  4. Step 4: Simplify right side
    313,720.90x = 76,967,265,410.64
  5. Step 5: Solve for x
    x = 76,967,265,410.64/313,720.90
  6. Step 6: Final answer
    x = 245,336.75

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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.