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Finding the Fourth Proportional to 315,837.52, 435,861.48 and 172,603.60

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Solution

The fourth proportional to 315,837.52, 435,861.48 and 172,603.60 is: 238,196.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,837.52 : 435,861.48 = 172,603.60 : x
  2. Step 2: Convert to fraction form
    315,837.52/435,861.48 = 172,603.60/x
  3. Step 3: Cross multiply
    315,837.52x = 435,861.48 × 172,603.60
  4. Step 4: Simplify right side
    315,837.52x = 75,231,260,549.33
  5. Step 5: Solve for x
    x = 75,231,260,549.33/315,837.52
  6. Step 6: Final answer
    x = 238,196.08

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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.