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Finding the Fourth Proportional to 315,753.71, 435,717.37 and 172,483.34

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Solution

The fourth proportional to 315,753.71, 435,717.37 and 172,483.34 is: 238,014.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,753.71 : 435,717.37 = 172,483.34 : x
  2. Step 2: Convert to fraction form
    315,753.71/435,717.37 = 172,483.34/x
  3. Step 3: Cross multiply
    315,753.71x = 435,717.37 × 172,483.34
  4. Step 4: Simplify right side
    315,753.71x = 75,153,987,273.62
  5. Step 5: Solve for x
    x = 75,153,987,273.62/315,753.71
  6. Step 6: Final answer
    x = 238,014.58

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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.