Home / 467,810.10-645,650.73-307,131.21

Finding the Fourth Proportional to 467,810.10, 645,650.73 and 307,131.21

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Solution

The fourth proportional to 467,810.10, 645,650.73 and 307,131.21 is: 423,888.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,810.10 : 645,650.73 = 307,131.21 : x
  2. Step 2: Convert to fraction form
    467,810.10/645,650.73 = 307,131.21/x
  3. Step 3: Cross multiply
    467,810.10x = 645,650.73 × 307,131.21
  4. Step 4: Simplify right side
    467,810.10x = 198,299,489,942.28
  5. Step 5: Solve for x
    x = 198,299,489,942.28/467,810.10
  6. Step 6: Final answer
    x = 423,888.86

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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.