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Finding the Fourth Proportional to 307,605.65, 424,496.83 and 171,637.12

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Solution

The fourth proportional to 307,605.65, 424,496.83 and 171,637.12 is: 236,859.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,605.65 : 424,496.83 = 171,637.12 : x
  2. Step 2: Convert to fraction form
    307,605.65/424,496.83 = 171,637.12/x
  3. Step 3: Cross multiply
    307,605.65x = 424,496.83 × 171,637.12
  4. Step 4: Simplify right side
    307,605.65x = 72,859,411,859.99
  5. Step 5: Solve for x
    x = 72,859,411,859.99/307,605.65
  6. Step 6: Final answer
    x = 236,859.80

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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.