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Finding the Fourth Proportional to 307,507.51, 424,361.06 and 171,538.08

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Solution

The fourth proportional to 307,507.51, 424,361.06 and 171,538.08 is: 236,722.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,507.51 : 424,361.06 = 171,538.08 : x
  2. Step 2: Convert to fraction form
    307,507.51/424,361.06 = 171,538.08/x
  3. Step 3: Cross multiply
    307,507.51x = 424,361.06 × 171,538.08
  4. Step 4: Simplify right side
    307,507.51x = 72,794,081,459.16
  5. Step 5: Solve for x
    x = 72,794,081,459.16/307,507.51
  6. Step 6: Final answer
    x = 236,722.94

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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.