Home / 307,100.90-423,788.28-171,127.82

Finding the Fourth Proportional to 307,100.90, 423,788.28 and 171,127.82

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Solution

The fourth proportional to 307,100.90, 423,788.28 and 171,127.82 is: 236,150.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,100.90 : 423,788.28 = 171,127.82 : x
  2. Step 2: Convert to fraction form
    307,100.90/423,788.28 = 171,127.82/x
  3. Step 3: Cross multiply
    307,100.90x = 423,788.28 × 171,127.82
  4. Step 4: Simplify right side
    307,100.90x = 72,521,964,497.95
  5. Step 5: Solve for x
    x = 72,521,964,497.95/307,100.90
  6. Step 6: Final answer
    x = 236,150.28

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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.