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Finding the Fourth Proportional to 292,592.88, 438,998.65 and 115,223.54

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Solution

The fourth proportional to 292,592.88, 438,998.65 and 115,223.54 is: 172,878.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,592.88 : 438,998.65 = 115,223.54 : x
  2. Step 2: Convert to fraction form
    292,592.88/438,998.65 = 115,223.54/x
  3. Step 3: Cross multiply
    292,592.88x = 438,998.65 × 115,223.54
  4. Step 4: Simplify right side
    292,592.88x = 50,582,976,025.17
  5. Step 5: Solve for x
    x = 50,582,976,025.17/292,592.88
  6. Step 6: Final answer
    x = 172,878.36

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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.