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Finding the Fourth Proportional to 292,570.38, 438,816.69 and 115,029.72

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Solution

The fourth proportional to 292,570.38, 438,816.69 and 115,029.72 is: 172,529.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,570.38 : 438,816.69 = 115,029.72 : x
  2. Step 2: Convert to fraction form
    292,570.38/438,816.69 = 115,029.72/x
  3. Step 3: Cross multiply
    292,570.38x = 438,816.69 × 115,029.72
  4. Step 4: Simplify right side
    292,570.38x = 50,476,960,982.03
  5. Step 5: Solve for x
    x = 50,476,960,982.03/292,570.38
  6. Step 6: Final answer
    x = 172,529.29

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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.