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Finding the Fourth Proportional to 315,627.73, 435,566.26 and 172,388.12

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Solution

The fourth proportional to 315,627.73, 435,566.26 and 172,388.12 is: 237,895.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,627.73 : 435,566.26 = 172,388.12 : x
  2. Step 2: Convert to fraction form
    315,627.73/435,566.26 = 172,388.12/x
  3. Step 3: Cross multiply
    315,627.73x = 435,566.26 × 172,388.12
  4. Step 4: Simplify right side
    315,627.73x = 75,086,446,088.03
  5. Step 5: Solve for x
    x = 75,086,446,088.03/315,627.73
  6. Step 6: Final answer
    x = 237,895.60

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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.