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Finding the Fourth Proportional to 307,649.82, 424,555.92 and 171,682.28

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Solution

The fourth proportional to 307,649.82, 424,555.92 and 171,682.28 is: 236,921.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,649.82 : 424,555.92 = 171,682.28 : x
  2. Step 2: Convert to fraction form
    307,649.82/424,555.92 = 171,682.28/x
  3. Step 3: Cross multiply
    307,649.82x = 424,555.92 × 171,682.28
  4. Step 4: Simplify right side
    307,649.82x = 72,888,728,333.10
  5. Step 5: Solve for x
    x = 72,888,728,333.10/307,649.82
  6. Step 6: Final answer
    x = 236,921.08

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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.