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Finding the Fourth Proportional to 307,369.97, 424,172.40 and 171,412.51

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Solution

The fourth proportional to 307,369.97, 424,172.40 and 171,412.51 is: 236,550.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,369.97 : 424,172.40 = 171,412.51 : x
  2. Step 2: Convert to fraction form
    307,369.97/424,172.40 = 171,412.51/x
  3. Step 3: Cross multiply
    307,369.97x = 424,172.40 × 171,412.51
  4. Step 4: Simplify right side
    307,369.97x = 72,708,453,635.86
  5. Step 5: Solve for x
    x = 72,708,453,635.86/307,369.97
  6. Step 6: Final answer
    x = 236,550.28

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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.