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Finding the Fourth Proportional to 315,754.05, 435,735.49 and 172,511.02

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Solution

The fourth proportional to 315,754.05, 435,735.49 and 172,511.02 is: 238,062.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,754.05 : 435,735.49 = 172,511.02 : x
  2. Step 2: Convert to fraction form
    315,754.05/435,735.49 = 172,511.02/x
  3. Step 3: Cross multiply
    315,754.05x = 435,735.49 × 172,511.02
  4. Step 4: Simplify right side
    315,754.05x = 75,169,173,830.10
  5. Step 5: Solve for x
    x = 75,169,173,830.10/315,754.05
  6. Step 6: Final answer
    x = 238,062.42

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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.