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Finding the Fourth Proportional to 258,189.51, 387,349.97 and 151,663.54

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Solution

The fourth proportional to 258,189.51, 387,349.97 and 151,663.54 is: 227,533.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,189.51 : 387,349.97 = 151,663.54 : x
  2. Step 2: Convert to fraction form
    258,189.51/387,349.97 = 151,663.54/x
  3. Step 3: Cross multiply
    258,189.51x = 387,349.97 × 151,663.54
  4. Step 4: Simplify right side
    258,189.51x = 58,746,867,669.09
  5. Step 5: Solve for x
    x = 58,746,867,669.09/258,189.51
  6. Step 6: Final answer
    x = 227,533.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.