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Finding the Fourth Proportional to 307,530.56, 424,392.36 and 171,564.51

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Solution

The fourth proportional to 307,530.56, 424,392.36 and 171,564.51 is: 236,759.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,530.56 : 424,392.36 = 171,564.51 : x
  2. Step 2: Convert to fraction form
    307,530.56/424,392.36 = 171,564.51/x
  3. Step 3: Cross multiply
    307,530.56x = 424,392.36 × 171,564.51
  4. Step 4: Simplify right side
    307,530.56x = 72,810,667,291.14
  5. Step 5: Solve for x
    x = 72,810,667,291.14/307,530.56
  6. Step 6: Final answer
    x = 236,759.13

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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.