Home / 313,629.44-432,988-206,510.72

Finding the Fourth Proportional to 313,629.44, 432,988 and 206,510.72

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Solution

The fourth proportional to 313,629.44, 432,988 and 206,510.72 is: 285,102.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,629.44 : 432,988 = 206,510.72 : x
  2. Step 2: Convert to fraction form
    313,629.44/432,988 = 206,510.72/x
  3. Step 3: Cross multiply
    313,629.44x = 432,988 × 206,510.72
  4. Step 4: Simplify right side
    313,629.44x = 89,416,663,631.36
  5. Step 5: Solve for x
    x = 89,416,663,631.36/313,629.44
  6. Step 6: Final answer
    x = 285,102.90

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1.5x scale

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.